Newsletter: Trawling

Hi divers

Weekend dive plans

No diving

Fishing trawler at work
Fishing trawler at work

Saturday morning looks to be the best time this weekend for a spot of diving. We are heading offshore on a pelagic birding trip / hunt for fishing trawlers which means no inshore diving for us until next week.

regards

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

Diving is addictive!

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Shark Spotters in brief

The Shark Spotters centre at Muizenberg
The Shark Spotters centre at Muizenberg

I had to write a short article about Shark Spotters a while ago, for the quarterly magazine of the company I work for. It was fun to write within the constraints of quite a punitive word count, and to try and emphasise the aspects of the program that I think are poorly understood by the public. Here’s the article:

Shark Spotters developed into Cape Town’s primary shark safety strategy out of two similar, informal initiatives. At Muizenberg and Fish Hoek in 2004, surfers arranged with lifeguards, car guards and trek fishermen to warn them when sharks were sighted. Today, Shark Spotters is a NPO funded primarily by the City of Cape Town, Save Our Seas Foundation, and public donations. It operates year-round at four beaches and during summer at another four. These are beaches that have both many water users and relatively common shark sightings.

A team of 30 spotters equipped with binoculars, polarising sunglasses and all-weather gear watch from the mountainside, and when a shark is sighted they notify colleagues at the beach to sound a siren and raise the appropriate flag. The flags indicate the current or recent presence of a shark, that spotting conditions are poor, or that it is safe to swim.

The spotters, all drawn from local communities, are trained in safety, first aid and shark behaviour. A further 10 team members deploy and retrieve the shark exclusion net at Fish Hoek beach during summer. Unlike the gill nets protecting beaches in KwaZulu Natal, this net does not catch sharks. It provides a physical barrier between sharks and swimmers. It is designed to be retrieved at the end of the day, or, to prevent entanglement, when there are marine mammals nearby. The Fish Hoek shark exclusion net is unique worldwide as an environmentally friendly shark attack mitigation measure.

It is the combination of favourable topography and surface-swimming sharks that makes Shark Spotters’ work possible and effective. The land around many of Cape Town’s beaches slopes steeply towards the sea, providing raised vantage points from which to spot. The sharks which pose the primary danger to water users, because of their size and curious natures, are great white sharks. Fortunately these sharks spend much time swimming on the surface, and their distinctive swimming style is readily recognisable.

Shark Spotters also conducts research on sharks to improve safety measures and provide management and conservation recommendations. As a result, the movements of great white sharks in False Bay are well understood. Sharks visit the beaches year-round, but with a distinct seasonal pattern. During winter the sharks congregate at Seal Island to feed on juvenile seals. During summer, sharks head for the backline of Cape Town’s beaches – probably to feed on the fish species found in False Bay at this time, and to rest in the highly oxygenated water close to shore. This is when they pose the greatest risk to water users.

Why support Shark Spotters?

I love the fact that Shark Spotters combines care for people with concern for the environment. The program takes a scientific stance backed by research, and has attracted worldwide recognition. It also provides training and employment for 40 residents of some of Cape Town’s most impoverished communities. I sit on the non-executive committee as a representative of Cape Town’s scuba diving community, and it’s a privilege to work with fellow water users and ocean lovers, and hopefully to provide a benefit to the greater community through our small contribution.

For more information, visit www.sharkspotters.org.za.

(Of course, lately white shark movements in False Bay are slightly less well understood than they have been, probably thanks to a pair of orcas whose irregular visits to Seal Island and Millers Point to hunt white sharks and sevengills seem to clear out the neighbourhood a bit! Fear not, Shark Spotters’ research is aiming to understand these changes, too.)

Newsletter: Still wintry!

Hi divers

Weekend dive plans

Sunday: Shore dives at Long Beach The water remains cold… But then it is winter. Both Saturday and Sunday should be reasonably decent for diving, but I think Sunday will be best. I will shore dive on Sunday, most likely around 10.00 am, once things have warmed up marginally. Let me know if you want to join us.

Turtle in Mozambique
Turtle in Mozambique

Turtle and seal rescue

The Kommetjie NSRI team rescued a seal and loggerhead turtle, entangled in fishing net, that washed up this week. The seal swam off, relieved, and the turtle is at the aquarium having some TLC and a health check, after which it will be released. Read all about it here.

regards

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

Diving is addictive!

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Newsletter: Windless

Hi divers

Weekend dive plans

Sunday: Boat or shore dives in False Bay (conditions dependent)

Apologies for the lateness of this week’s newsletter… Blame a very delayed Safair flight from Johannesburg last night!

Lighthouse at Kalk Bay
Lighthouse at Kalk Bay

We have three windless days coming up and hopefully some sun to go with that. There has been a lot of swell in False Bay, and coupled with the rain and run off the visibility is not all that great. If anything, Sunday will be the best diving option so based on what we see Saturday, we will plan for Sunday. Let me know if you want to join in.

regards

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

Diving is addictive!

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Bookshelf (and article): The Hunt for MH370

The Hunt for MH370: The Mystery, The Cover-Up, The Truth – Ean Higgins

The Hunt for MH370
The Hunt for MH370

Perhaps I’m out of my lane sharing this book on a blog that is mostly, at least tangentially, about the ocean, but I read it very much as someone interested in everything about the ocean, including the subject of a multi-national deep sea search for an aircraft that apparently vanished without a trace in March 2014.

The story of Malaysian Airlines flight MH370 is reasonably well known, but unresolved – pieces of wreckage from the plane have been found on Indian Ocean islands such as Reunion, but the crash site and black box of the flight has never been located. Millions of dollars have been spent looking for the plane, but there is no certainty about what happened.

Ean Higgins is an Australian journalist who covered the disappearance of MH370 from day one. In this book he presents several theories as to what occurred on the flight, with varying degrees of plausibility. He does share which theory he finds most likely, and it happens to coincide with the findings of William Langewiesche in a gripping long form article on MH370 that was published in The Atlantic earlier this month. According to Langewiesche,

Because the Malaysians withheld what they knew, the initial sea searches were concentrated in the wrong place—the South China Sea—and found no floating debris. Had the Malaysians told the truth right away, such debris might have been found and used to identify the airplane’s approximate location; the black boxes might have been recovered. The underwater search for them ultimately centered on a narrow swath of ocean thousands of miles away. But even a narrow swath of the ocean is a big place. It took two years to find the black boxes from Air France 447, which crashed into the Atlantic on a flight from Rio de Janeiro to Paris in 2009—and the searchers had known exactly where to look.

Higgins writes with compassion about the families and loved ones of the passengers on MH370. He makes it clear that the lack of resolution around the events of that evening in March 2014 has a human impact that those of us who have never had a loved one disappear without an explanation, cannot imagine.

I started reading this book with interest, but also holding a mildly pessimistic expectation that it would re-hash the little I knew about the missing flight, without any conclusions. Contrary to that expectation, I found it surprisingly satisfying, and while the mystery remains mysterious, it is clear from which quarter the truth must emerge. Whether it ever does so, remains to be seen

This is a gripping read that will engender an appreciation for the magnitude of the challenge presented by an underwater search far from shore. Read it, and read the William Langewiesche (author of The Outlaw Sea) article here.

Get a copy of the book here if you’re in South Africa, otherwise here.

Newsletter: Wait and see

Hi divers

Weekend dive plans

Sunday: Shore dives in False Bay

Cape fur seals at Kalk Bay harbour
Cape fur seals at Kalk Bay harbour

There is a fair amount of swell around right now, combined with strong winds. Although False Bay looks a little scrappy, the water colour remains good. Sunday looks like the best, or only, option for diving, but we will most likely shore dive. I will wait until Saturday mid afternoon to make the call. Get in touch if you wish to join.

regards

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

Diving is addictive!

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Bookshelf: Beachcombing in South Africa

Beachcombing in South Africa – Rudy van der Elst

Beachcombing in South Africa
Beachcombing in South Africa

Why so quiet? What have we been doing? Working, mostly. Trying to stay alive. And a bit of reading, and some beachcombing. Enter this is marvellous little book from fish fundi Rudy van der Elst (A Field Guide to the Common Sea Fishes of South Africa).

Chapter by chapter, van der Elst describes the types of debris that one might find on a beach. After a brief orientation chapter covering the ocean current regime around South Africa, relevant regulations, safety, beach ecology, tides, pollution and more, we launch into a tour of washed-up treasures.

Predictably, many of the items to be found are organic in nature – plants, invertebrates of various types, eggs and egg cases, fishes, birds, and shells. There are also items such as oceanographic devices, tags from marine animals, fishing equipment, cyalumes, buoys – some of these (such as tags) should be returned to their owners, and others should be removed from the vicinity of the ocean (such as discarded fishing nets and lines).

The chapter on marine animals (resting, nesting and stranded) is exceptionally useful and it is almost for this alone that I’d like to put a copy of this book in every home in every coastal town in the country. Seals, whales, turtles and seabirds can end up on the beach, sometimes in difficulty and at other times not. It can be hard to tell, and well-meaning members of the public can unwittingly cause great harm while trying to assist. A list of useful contacts in this regard appears at the end of the book, such as the Two Oceans Aquarium and the SPCA (region-specific).

The final two chapters cover miscellaneous “treasures” such as fossilised sharks teeth, sea glass, logs, and actual treasure, as well as beachcombing through the ages in South Africa. Here we learn about tidal fish traps, coastal caves, and other historical coastal dwellers who made their living from the sea.

We’ve found some awesome things on the beach, from shipwrecks to goose barnacles to rare crabs. Beachcombing is an accessible hobby that requires nothing but time, observation skills, curiosity, and a beach to stroll on.

This is a beautifully illustrated, comprehensive little volume that deserves to come with you on your beach holiday. It’ll prompt more careful examination of the flotsam and jetsam on your local beach, and, probably, more early morning low-tide visits to find the best pickings!

Wild Card magazine featured this book when it was published. Get it online here if you’re in South Africa, or here for your Kindle.

Newsletter: Just swell

Hi divers

Weekend diving

No dives planned  

Anemone at the Two Oceans Aquarium
Anemone at the Two Oceans Aquarium

Given the time of year, the large swells we are having are not all that unusual. Neither is the odd day or two of south easterly wind. Friday and Saturday feature both these gremlins, so conditions won’t really be great. Sunday’s forecast is a little rosier, however I doubt the visibility will have recovered and the surge will still be a lingering factor. This weekend my choice is to stay home.

regards

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

Diving is addictive!

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Bookshelf: Seaweed Chronicles

Seaweed Chronicles: A World at the Water’s Edge – Susan Hand Shetterly

Seaweed Chronicles
Seaweed Chronicles

This is one of the best kinds of popular science book. It reads so easily that by the time you’ve absorbed enough material to attain a diploma in phycology (the study of seaweed), you also feel as though you’ve met and befriended a varied cast of individuals whose lives revolve – in various ways – around slippery marine algae.

It’s written by an American author, and the book centres squarely on the coast of Maine in the United States, obviously much loved by the author. It’s not clear initially that the geographical focus of the book is so narrow; some readers may want to know this in advance. While reading, I was grateful for the perspective that a Veld and Sea seaweed foraging course gave me on our local seaweeds.

Vignettes of seaweed-centred lives, from foragers turned businesspeople, to scientists, to shepherds whose flocks feast on seaweed during their coastal sojourns, introduce us to a cast of characters illustrating the many uses and commercial possibilities of seaweed, as well as the management and conservation challenges associated with its harvest. Seaweeds are pivotal in coastal ecosystems, providing vital habitat and sustenance. This isn’t just a science book (which some may find frustrating). It’s as much about the people as about the seaweed – but you will learn some science from it!

There’s a good review here at the New York Journal of Books.

Get the book here if you’re in South Africa, otherwise here.

 

Newsletter: Divers’ choice

Hi divers

Weekend diving

No dives planned

Rough seas at the Cape of Good Hope last weekend
Rough seas at the Cape of Good Hope last weekend

False Bay is not exactly horrid at the moment, but nor is it spectacular. There has been a few weather systems one after the other so if you must dive, take a drive and look around before deciding where to get into the water. Windmill and Long Beach should be diveable and Sunday would be the better day of the two. Expect some surge. I have no dives planned.

regards

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

Diving is addictive!

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