Coastal foraging part I: the forage

Roushanna educates us about foraging for seaweed
Roushanna educates us about foraging for seaweed

A chance conversation with a friend who also volunteers at the Two Oceans Aquarium led to me enrolling in a coastal foraging course with Roushanna and Gael Gray from Good Hope Gardens, the nursery between Scarborough and Cape Point. Their coastal foraging courses are run during the summer months (I went in December), on dates close to spring tide, so that the maximum possible area of shoreline is available to forage on. The course takes the form of a rock pool expedition on Scarborough beach, followed by lunch – prepared by the participants – at Gael’s beach cottage.

Foraging for edible seaweed
Foraging for edible seaweed

As I get older I am finding it increasingly difficult to suppress a wildly eccentric streak that frequently finds me – consciously or unconsciously – making small preparations for some kind of apocalypse (zombie or otherwise). This might be related to living on the South African roller coaster for too long, but whatever the origin of this latent anxiety, it has served to make our home life more sustainable and – little bit by little bit – more independent of the electricity grid, the municipal water system, and grocery stores. The idea of coastal foraging dovetails nicely with my desire to learn how to live a little bit more off the land than off the shelves at Woolworths!

Mollusk permit inspection by fisheries officials
Mollusk permit inspection by fisheries officials

It is important to respect some simple rules to ensure that your foraging is sustainable, safe, kind to the environment, and legal. Each of us had purchased a mollusk permit allowing us to harvest mussels, obtainable from the post office (available for R94 using the same form as the scuba diving in marine protected areas permit), and these were inspected by fisheries officials quite early on in our forage. You don’t need a permit to harvest seaweed (however if you wanted to do it on an industrial scale you might need to go through official channels).

There are three types of mussels found on South Africa shores: the ribbed mussel and black mussel are indigenous, and the Mediterranean mussel is introduced. Unfortunately Mediterranean mussels out-compete the indigenous varieties, and we only saw one or two black mussels while we were out. The mussels we harvested were the Mediterranean variety, distinguishable from black mussels by the thick, flat edge to their shells. Black mussels have pointy edges all around their shells, making them more streamlined.

Mediterranean mussel (left) and black mussel (right)
Mediterranean mussel (left) and black mussel (right)

There is only one type of seaweed growing along our coast that is harmful to eat (acid weed – Desmarestia firma, which has sulphuric acid in its fronds). This brown algae species does not grow on the rocky shore but only further out in the surf zone. This gives rise to the simple rule of only harvesting seaweed that is growing on the rocks, and never collecting seaweed that is floating free.

When harvesting seaweed, we used a pair of scissors to avoid pulling the entire plant off the rocks, and cut no more than a third of the leaves. Seaweed is full of vitamins and minerals, particularly iodine and potassium. It isn’t something you’d make a whole meal of, but it is a healthful addition to many dishes and – once you know how to prepare it – tastes pretty good!

Clouds at Scarborough
Clouds at Scarborough

You can read more about the Good Hope Gardens coastal foraging experience here and here. Watch this space for more about what we prepared with our seaweed spoils…

Bookshelf: Rescue Warriors

Rescue Warriors: The US Coastguard, America’s Forgotten Heroes – David Helvarg

Rescue Warriors
Rescue Warriors

Much of this book reads like one of the Reader’s Digest “drama in real life” stories that I used to devour from the magazines that my granny brought us when she came to visit. (She’d also bring a packet of Sparkles or Cadbury Eclairs.)

Journalist, activist and former war correspondent David Helvarg (who also wrote Saved by the Sea and 50 Ways to Save the Ocean) spent two years embedded with various branches of the US Coastguard in order to experience their work.

I had naively thought that the US Coastguard, despite being funded by the government, and despite their website having a .mil for military domain name, was just a slightly larger, more financially flush version of South Africa’s National Sea Rescue Institute (NSRI).

I was wrong. The mandate of the US Coastguard is to enforce maritime law (this is its primary difference from the NSRI) as well as to perform search and rescue operations. Viewers of the Deadliest Catch series will be familiar with the rescue work of the Coastguard in extremely challenging conditions. As a result of its law-enforcement mission, the Coastguard uses weapons and provides a lot more military-style training than you’d expect from a pure rescue operation. The Coastguard falls under the department of homeland security and operates cutters (with guns), icebreakers, small boats, helicopters, and other aircraft.

Helvarg’s conservationist tendencies shine through in several parts of Rescue Warriors, and he does not shy away from confronting the aspects of the Coastguard that he finds problematic. His contention is that the Coastguard receives far less publicity than it deserves. This book goes some way towards bringing attention to the individuals who have saved tens of thousands of people during Hurricane Katrina, via water evacuation during the September 11 attacks, and in countless other less well-known emergency situations.

This is a gripping read which I thoroughly enjoyed. I was amazed by the amount of funding and equipment that the Coastguard has at its disposal compared to the NSRI, even though the organisation is actually badly underfunded, especially when considered relative to the rest of the United States war machine. I was also impressed by the egalitarian approach that draws many women to join the Coastguard and enables them to rise in its ranks. The Coastguard made all its jobs available to women in 1977, something which other branches of the military have not yet done.

You can get a copy of the book here (South Africa), here or here.

Newsletter: In from the cold

Hi divers

Weekend dive plans

Saturday: Launching at 9.00 from Oceana Powerboat Club, conditions permitting

We are back from a trip up north… Really far north – so far north that the temperatures, so I was told, were 0 – 2 degrees Celcius but to me felt like minus 50 degrees. It was great diving in False Bay this week in 22 degree water.

Clare in the (fake) snow at Tivoli
Clare in the (fake) snow at Tivoli

The weekend is a little on the questionable side as the wind and swell forecasts are not promising. I think the best option is going to be Table Bay, and If we go it will be to North and South Paw. I will take a look there tomorrow at the conditions and confirm late afternoon to those on the list if we are diving. Let me know if you’re keen to dive by email, text, or message in a bottle.

Den Blå Planet aquarium in Copenhagen
Den Blå Planet aquarium in Copenhagen

Enrichment activities

If you’re at  a loose end in the wind and feel like braving the Waterfront, check out the highly-recommended Titanic exhibition, on until March. If you buy tickets using this link, 20% of the ticket price will be donated to the NSRI.

While at the Waterfront, there’s also the 2015 Wildlife Photographer of the Year exhibition at the Chavonnes Battery Museum.

regards

Tony Lindeque
076 817 1099
www.learntodivetoday.co.za
www.learntodivetoday.co.za/blog/

Diving is addictive!

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Newsletter: Different strokes

Hi divers

Weekend dive plans

Friday: Launching at 9.00 am from Simon’s Town jetty

Saturday: 6.00 am double tank dives from Simon’s Town jetty

Dive conditions

Same again is not a phrase we can use for December this year. Last December was appalling by comparison and although we are only 10 days into the month, we have already done twice the number of dives we did in the whole of December last year.

Conditions this past weekend were great and they have been the same all week. The westerly wind today has made things even better and tomorrow and Saturday should be pretty good… In False Bay. The Atlantic looks a little dark and the water temperature is 16 degrees Celcius, which doesn’t herald good viz that side.

Leaving for dive two on Sunday
Leaving for dive two on Sunday

Dive plans

We are launching tomorrow and Saturday, but I think Sunday will be a little too windy for diving. The forecast is for it to blow hard from midday on Saturday, so we will launch for a double tanker at 6.00 am on Saturday from Simon’s Town jetty.

Freebies

Remember our free try dives in the pool until Christmas eve. We have had some bookings and the pool is warm! It’s a great opportunity to introduce your friends and family to scuba diving. Get in touch if you want to bring someone over – booking is essential.

Action required

Please have your MPA permits up to date – you can get one for R94.00 at the post office. Take along your ID document.

On the subject of Marine Protected Areas, please read this and send in your comments about the imminent opening of the Tsitsikamma MPA to fishing. Allowing fishing in a marine protected area is a bit of a contradiction in terms, so I encourage you to read about the proposal and let your voice be heard on the subject.

regards

Tony Lindeque
076 817 1099
www.learntodivetoday.co.za
www.learntodivetoday.co.za/blog/

Diving is addictive!

To subscribe to receive this newsletter by email, use the form on this page!

Request for comment on the proposed opening of the Tsitsikamma MPA to fishing

The South African ministry of the environment has proposed to open the country’s oldest Marine Protected Area, the Tsitsikamma marine reserve, to recreational angling by certain community members. The official press release by the Minister of the Environment can be found here.

Near the Storms River mouth in the Tsitsikamma MPA
Near the Storms River mouth in the Tsitsikamma MPA

A bit of background

There is wide acceptance in the scientific community that marine protected areas are a vital tool to arrest the damage caused to the world’s oceans by the over-exploitation of marine resources, which has been occurring for the last thousand years, with accelerating intensity in modern times. You can read about Colin Attwood’s assessment of South Africa’s MPAs, and about why MPAs work, here.

In the Marine and Coastal Component (pdf) of the 2011 National Biodiversity Assessment, Kerry Sink and co-authors found that 47% of South Africa’s marine habitats are threatened (about 30% by area), most of which are coastal environments. They also found that fishing has the greatest negative impact on marine biodiversity. Most of South Africa’s marine resources are over-exploited. The report states:

South Africa’s Marine Protected Area (MPA) network plays a key role in protecting marine and coastal habitats and sustaining fisheries. Coastal protected areas can support rural livelihoods and local economic development through providing jobs and opportunities for ecotourism and conservation-related industries. Protected areas attract foreign and domestic tourists, provide ecosystem services, and safeguard the environment for future generations. Fully protected MPAs help sustain fisheries by protecting breeding resources and by seeding adjacent areas with eggs, larvae or young and adults.

The first of the priority actions recommended in the marine component of the National Biodiversity Assessment is to “expand and strengthen” the network of MPAs around our coast.

South Africa has a network of 23 Marine Protected Areas, covering just under 22% of our 3,113 kilometre coastline (you can find a list of them along with details of their size and other information on page 147 of the National Biodiversity Assessment 2011: Marine & Coastal Component (pdf)). Less than half of the linear extent of coast covered by MPAs falls into no-take zones, where fishing is not allowed at all. The rest of the MPAs permit certain types of commercial and recreational fishing.

The Tsitsikamma Marine Protected Area

The Tsitsikamma MPA is South Africa’s oldest Marine Protected Area, gazetted in 1964. It covers 264.4 square kilometres of Eastern Cape coastline (about 80 kilometres of coast, three nautical miles offshore), stretching from Nature’s Valley to the mouth of the Groot River. No fishing of any kind is currently permitted in the MPA. It is managed by SANParks, who acknowledge its importance in South Africa’s MPA network.

Map of the Tsitsikamma MPA, with proposed fishing areas
Map of the Tsitsikamma MPA, with proposed fishing areas

The Tsitsikamma MPA was not originally a no-take zone; since 1975 fishing in the MPA has been gradually reduced, and it was finally closed entirely to fishing in 2000 during a time of crisis with respect to South Africa’s plummeting fish stocks. It gets over 200,000 visitors per year, employs many people from local communities, and is responsible for significant tourism revenue both directly from the reserve, and from activities in the surrounding area. You can find more detail about this particular MPA on pages 34-40 of the WWF’s 2014 technical report on the State of Management of South Africa’s Marine Protected Areas (pdf).

Scuba diving in the reserve is not permitted except in designated areas close to the Storms River Mouth, with designated operators.

The proposal

Certain areas in the Tsitsikamma MPA are to be opened to recreational anglers who reside in the Tsitsikamma community, and are in posession of a South African ID document. The anglers cite “cultural, historical and subsistence reasons” for wanting to fish in the MPA, and have been campaigning to do so for years.

Definition of Tsitsikamma community
Definition of Tsitsikamma community

These anglers will be permitted to fish and gather bait (with a permit) during daylight hours, from the shore, for at most four days out of every calendar month, and are subject to reduced bag limits. Three per person per day for fish with a recreational limit of less than 10 may be caught. For fish with no recreational bag limit or a limit of more than 10 per day, only 10 may be caught per angler per day. No sharks and rays may be caught.

Things to think about

An attempt was made to open the Tsitsikamma MPA to recreational fishing in 2007. This met with vigorous opposition from the scientific community and environmentalists, and was vetoed by then-minister of the Environment, Marthinus van Schalkwyk. In a statement on the matter (well worth reading and possibly a good starting point when you are crafting a response to these proposals), van Schalkwyk said that

The reasons for originally closing the MPA in 2000 and the prevailing underlying circumstances have not changed. It is important to note that this decision will not have an impact on food security in the area as the issue dealt with is a matter of recreational fishing.

He also commented that

Opening this MPA to recreational fishing will set a dangerous precedent in a conservation area that is closed to all, for the benefit of all. Allowing a few people access for recreational purposes would negate the benefits that accrue to all South Africans. A decision to open this MPA would effectively have signalled a broader shift in policy on the part of government and the beginning of a new approach that is neither sustainable nor in line with our stated objectives.

He further acknowledged that it would be extremely difficult for effective monitoring and compliance measures to be enforced.

Another (unsuccessful) attempt to open the reserve to anglers was made in 2010.

If the MPA is now to be opened to fishing, the question that must be answered is what has changed since 2007? Are any of the reasons cited by van Schalkwyk for keeping the Tsitsikamma MPA closed, no longer valid?

Environmental and economic impact

WWF-funded report estimated in 2006 that the fish stocks built up in the Tsitsikamma MPA could be fished down in approximately 33 days (page 7). The benefit to opening the MPA would thus accrue very quickly to the local fishermen, after which the MPA would have fish stocks of similar quality and size to those outside the reserve and everyone would be worse off.

The largest fish, which spawn exponentially more (example – section 5.4) than their smaller counterparts, would be taken first. The MPA plays a vital role in re-seeding areas along its boundaries with new fish.

Enforcement

In the State of Management of South Africa’s Marine Protected Areas (pdf), Chadwick, Duncan and Tunley (2014) report that:

Enforcement continues to be a major challenge in most MPAs. The primary hindrances to enforcement activities include inadequate staffing, the lack of suitable regulations and poor morale. Morale would be boosted and enforcement efficiency improved if the judiciary became more aware of MPA issues and if all necessary enforcement actions were supported at the highest governmental levels without discrimination between law breakers. A lack of clear objectives for each MPA and a similar lack of understanding of the role and importance of MPAs at higher political levels poses a continual risk of existing MPAs being opened or de-proclaimed.

Can we expect SANParks to properly police the MPA when it is opened to fishing? What is the record of SANParks when it comes to policing of the other MPAs for which they are responsible? How, for example, will they determine whether an individual has already fished for his designated four days in the month? Will there be boots on the ground and boats in the water? There is already an illegal fishing problem in the reserve.

In announcing the proposal, Environment Minister Edna Molelwa states that “A detailed monitoring plan which includes fixed underwater cameras and process will be implemented. Furthermore SANParks has developed an operational plan which includes additional manpower for monitoring of access and regulations of permits.” (As an aside, do you think she’s talking about BRUVs?!)

Where is the funding for the “additional manpower” going to come from? If SANParks can whip it out of a hat at such short notice, why have they failed to provide proper support and enforcement to the other MPAs that they are responsible for?

Motives

Is the community goodwill that will be generated by opening the MPA to fishing sufficient that this proposal can be explained by the proximity of the 2016 elections? (I don’t know.)

If the proposed fishing is “subsistence” fishing as Minister Molelwa’s statement suggests, and stringent bag limits apply, is four days of fishing per month even a meaningful concession to subsistence fishermen?

Balancing human rights and conservation

For the other side of this debate, I ask you to consider how you would feel if you were accustomed to engaging in an enjoyable activity – one that perhaps even made you a bit of money now and then, and fed your family – close to home, but then were prevented from doing so. This is the experience of the angling community around the Tsitsikamma reserve, who were allowed to fish there until the closure of the MPA to fishing in 2000. Many, or even all, of the fishermen who have been campaigning to fish in the Tsitsikamma MPA are from groups of people who have historically had very limited access to South Africa’s resources, who lack the resources to travel long distances to other fishing spots.

Thursday’s post about balancing customary rights to fish with environmental imperatives is required reading for this section of the debate. What might a compromise look like, if you accept the view that the local fishermen have a case for being allowed to fish in the area?

Unfortunately you don’t get to be a thinking adult in South Africa without engaging with some hard questions with shameful historical origins. So get to it.

 How to submit your comments

Send an email to MPARegs@environment.gov.za, or use the postal address provided on page 4 of the relevant Government Gazette (pdf). Send your comments before 1 February 2016. Rationality and respect are never out of place when you’re trying to be heard.

You are welcome to copy and paste from this blog post when you put together your comments, although I haven’t made it as easy to do so as I did with the seal snorkeling issue because I don’t think it’s necessarily quite as clear cut. May I respectfully ask that if you talk to the press on the subject, or communicate about it in any public forum, that you use your own words.

Update (1 December 2015)

It appears that the fishermen are exerting pressure on SANParks to open fishing in the MPA by 15 December. Some sources (facebook) report that this is a done deal; other news sources (Times Live, The Herald) seem to indicate that this aspect is still under negotiation. The facebook report seems credible, particularly given the stroppy tone evinced in the comments by the original poster, when asked for more information.

In any case, giving in to pressure from the community would put the nail in the coffin of any theory other than expediency, ignoring scientific advice, and political pressure as a motive for the opening of the MPA.

Can someone explain to me (or the Environmental Affairs minister) how it is possible to both benefit society (by allowing fishing) AND to ensure the fish are protected for future generations (this would entail keeping the MPA closed)? Do fisheries scientists know that new knowledge has apparently revealed that allowing fishing protects fish? Has someone told them? This quote is from the Times Live article, emphasis mine:

Environmental Affairs Minister Edna Molewa said the move would benefit society and ensure such benefits were protected for future generations.

“The trade-offs between benefits and the protection of the resources that provide benefits are complex and subject to continuous change as human needs evolve and new knowledge accumulates,” she said.

“The government must be prepared to continuously reassess these trade-offs in consultation with its various partners.”

You know what to do. Send a jolly email: MPARegs@environment.gov.za. Send your comments before 1 February 2016. If you don’t send a formal response, but only bleat about it on facebook and other forums, you won’t be heard by the people making the decisions. Be a good citizen!

Newsletter: Diving friendly

Hi divers

Weekend dive plans

Sunday: Launching from Hout Bay at 8.30 am for Tafelberg Reef / Di’s Cracks (sites depending on conditions)

This past week has not really been a diving friendly week. There has been a fair amount of swell on and off and also a decent amount of humping south easterly wind. The weekend shows promise for the Atlantic, which is currently still dirty but is showing signs of improvement. There is a good chance it will be clean by Saturday or Sunday. The swell goes south east, so I think Granger Bay may be a possibility, and Hout Bay will almost certainly work.

Diving last Friday
Diving last Friday

Sunday will probably have less viz than Saturday but also a bit less swell, which is important for Hout Bay launches.  If by Saturday afternoon the Atlantic is not clean we will dive False Bay instead (warm water is better than cold water in poor visibility!). 

Let me know if you want to dive.

regards

Tony Lindeque
076 817 1099
www.learntodivetoday.co.za
www.learntodivetoday.co.za/blog/

Diving is addictive!

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Balancing conservation imperatives and traditional fishing rights

How can we strike a balance between scientifically-driven conservation priorities and taking care of people, South Africans, many of whom have historically not been cared for at all?

Giant roman at Photographer's Reef
Giant roman at Photographer’s Reef

Loretta Feris, in a paper called A Customary Right to Fish When Fish Are Sparse: Managing Conflicting Claims between Customary Rights and Environmental Rights (pdf), grapples with the issue of “what happens when an indigenous community attempts to exercise its customary right to fish and the nearest access to marine resources is located in a marine protected area.” This issue is not peculiar to South Africa, but has arisen in many countries that were colonised.

South African legislation has not yet addressed the conflict between customary rights to marine resources by the communities who depend(ed) on them, and environmental law that designates certain areas as reserves and forbids fishing.

The South African Bill of Rights sets out the criteria for justifiable restrictions on the rights it enshrines. Feris writes,

In essence, it lays down a proportionality requirement, in terms of which it must be shown that the law in question (the Marine Living Resources Act) serves a constitutionally acceptable purpose and that there is sufficient proportionality between the infringement and the purpose that the law is designed to achieve.

In other words, if your rights are infringed by legislation, the purpose of that legislation must be consistent with the Constitution of South Africa, and the infringement of your rights must be proportional to the benefits accruing by having such a law on the books. According to Feris, the National Environmental Management: Protected Areas Act No. 57 of 2003 (pdf), which provides for the establishment of Marine Protected Areas, places

a very clear constitutional duty on the government to ensure that natural resources such as marine resources are managed in a manner which acknowledges the economic interests in fisheries, but at the same time ensures that ecosystems and species are protected to ensure long-term viability.

Feris describes arguments for fisheries management approaches that make use of indigenous communities as custodians, assessors of the fishing stock, and managers and enforcers. The aim of such an approach would be to confer both a right (to harvest) and a duty (to protect) upon the local communities that have traditionally had access to a marine resource. Ensuring that employees at national parks and protected areas are drawn directly from the surrounding communities is one way to enact this type of philosophy.

Can I suggest Feris’s article as some Sunday afternoon reading? This is not a problem that is going to disappear in South Africa any time soon, and as a trying-to-be-compassionate human and conservation-minded ocean person it’s good to familiarise oneself with the grey areas that challenge one’s convictions.

Sustainable Seas Trust is endeavouring to strike the balance that Feris writes about in her article, and – should you be at a loss as to how to proceed – you could consider supporting them.

Christmas gift guide 2015

First up, let me refer those of you who are truly bloody-minded Christmas shoppers to the gift guides from previous years: 2010, 2011, 2012, 2013, 2014. This one draws heavily upon all of those, and you may safely skip the past editions unless you really want lashings of Christmas gifting cheer. I am tempted to say, as usual, that if you haven’t started thinking about this already, you’ve left it too late… But prove me wrong. (Plus, I’m publishing the gift guide a bit earlier than I usually do – you’ve got a month to get busy.)

This is our Christmas tree. It's cat proof.
This is our Christmas tree. It’s cat proof.

Donations

For the person who has everything, or because you’re feeling grateful, consider a donation on behalf of your friend or loved one:

Experiences

Don’t forget to add a memory card for the lucky recipient’s camera if you plan to gift any of these! Contact Tony for prices.

For the non diver, you could inspire a love for our oceans with one of these:

We’ve really got our money’s worth from our Wild Card this year. It has been used for multiple entries to Cape Point, for De Hoop, and for one or two other trips, and paid for itself in a few months. The full card is a bit pricey, but there’s a great alternative called My Green Card, that costs R110 and gives twelve entries to any of the paid sections of Table Mountain National Park (so, Cape Point, Boulders, Silvermine, Oudekraal, and a few braai areas). Read the fine print carefully though – if you use it up quickly, you have to wait for the 12 months to pass before you can purchase another one. But you can also share the 12 clips with friends, whereas a regular Wild Card is tied to your identity. You will have to go to the SANParks office in Tokai to get a My Green Card.

Something to read

Everything you need to know about finding a book related to the ocean can be discovered in our list of most recommended books, and our guide to finding the book you need (on this blog, at least!). There are a couple of children’s books there, too.

Something to watch

A DVD – either a movie, a series box set, or a documentary – is not a bad gift idea!

Something beautiful

Clip Clop designs and prints beautiful tide charts for Cape Town and Durban and moon phase charts for the year. You can order online or usually find them at Exclusive Books.

If you take your own photos, you could print and frame a couple, create a photo book (Orms can help with this if you don’t know where to start), or experiment with stretched canvas prints if that’s your thing. A digital photo frame pre-loaded with underwater images is also a lovely gift for a diving friend.

Dive gear and useful stuff

Smaller items of gear such as cutting tools, masks, clips and other accessories won’t break the bank. Contact Tony for some ideas and suggestions as to what to get and where to find it.

You can order a WetSac online (seriously, check it out). Otherwise, a fabulous hooded towel that will be the envy of everyone at the dive site can be obtained from one of the surf shops (try Lifestyle Surf Shop and just walk in there with your head up like you don’t care you’re not a surfer) next to Primi Piatti at Muizenberg.

Otherwise, just think a little bit about what might be useful before or after a dive. Sunscreen, deep conditioner, cleansing shampoo, a mini dry bag, a beanie for cold days on the boat,

Newsletter: Smoke on the water

Hi divers

Weekend dive plans

Sunday: Boat or shore dives, conditions dependent!

We have had terrific conditions all week and have been taking full advantage. False Bay is cleanish and warmish. Visibility has varied from site to site but the bay is full of life. On Tueday we spent our surface interval time photographing sea swallows at Batsata Maze. Wednesday’s surface interval was spent filming giant short tail sting rays at Millers Point, and today we were fortunate enough to have two orcas swim by close inshore whilst the divers were on the SAS Pietermaritzburg this morning. Who knows what we will see tomorrow!

Giant short tailed sting ray behind the boat at Millers Point
Giant short tailed sting ray behind the boat at Millers Point

Sadly the diving today was somewhat overshadowed by the raging fire that descended on Simon’s Town with the westerly wind, despite the best efforts of many firefighters. Watching from the water you could see the speed at which the fire traveled and I doubt anything other than a thundershower was going to slow it down. On the run back into Simon’s Town we went through really thick smoke.

Simon's Town fire
Simon’s Town fire

The weekend, however, does not look too rosy. At cowsharks this afternoon the swell was quite noticeable and although it stays at 3 metres for most of tomorrow, the forecast is for 5-6 metres on Saturday. It seldom reaches the height in the forecast but even at 4-5 metres diving becomes less than great. Surge and low viz are on the cards. I think there will be a better than good chance that Sunday will be semi-decent so I will provisionally schedule diving, either from the boat or perhaps a shore dive or two… Text me if you want to join and I’ll keep you posted.

Diarise

Don’t forget the Shark Spotters fundraiser on Sunday – should be fun!

regards

Tony Lindeque
076 817 1099
www.learntodivetoday.co.za
www.learntodivetoday.co.za/blog/

Diving is addictive!

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Article: Smithsonian on whether shark repellents really work

The Freedom7 SharkShield unit outside its neoprene case
The Freedom7 SharkShield unit outside its neoprene case

Here’s a quick read on shark repellents from Smithsonian.com. While it only takes a few paragraphs to explain the different attempts humans have made to avoid encountering sharks while using the ocean, the task of actually developing technology to do this is far more complex. Testing shark repellents is also ethically difficult – in the same way that it’s hard to test medications for use during pregnancy, as one could be causing harm to human subjects.

(It’s worth reading a bit about the Shark Shield device pictured above for more on testing. Testing the efficacy of stripy wetsuits, on the other hand, is almost impossible, and for this reason they can be almost impossibly lucrative – imagine a product where you don’t have to prove whether it works, and when it fails you can (a) throw up your hands and make an excuse along the lines of “it was a freak event”/”the guy must have been wearing it incorrectly” or (b) close the company and disappear.)

The “electronic fence” mentioned at the end of the article is the shark repellent cable that the KwaZulu Natal Sharks Board tested at Glencairn last summer. You can read more about that (also from Smithsonian.com) here.

To bring our attention back to the original topic: here is the article on shark repellents at Smithsonian.com, with ample links for you to pursue interesting avenues of exploration!