Showing posts with label Dr. Mauricio Hoyos-Padilla. Show all posts
Showing posts with label Dr. Mauricio Hoyos-Padilla. Show all posts

Friday, August 7, 2020

Guadalupe Great White Sharks in danger.

I started SCUBA diving and spear-fishing at Guadalupe Island in 1996, 5 years before we started shark diving there. It is during that time that we discovered the Great White Sharks that are aggregating at there. At first it was just the occasional encounter, mainly while spear-fishing, but over the years those encounters grew in frequency and it was not unheard of to see a GWS while SCUBA diving. 
 
My first encounter with a GWS happened at the south end of Guadalupe, while working as a divemaster, watching some divers. I noticed something moving behind me and when I turned I was face to face with a Great White Shark. It calmly swam by me, continued away from me for about 100' or so and slowly turned around, swimming right back towards me and passing just inches from my body. Strangely, it was not a scary experience, but rather a "wow!" kind of moment. It wasn't at all what I expected from seeing a GWS up close and personal and it started my love for (some people might say my obsession with) these awesome animals.
 
 

In 2001 we started our first season of cage diving at Guadalupe. At the time the Island was not a biosphere and there were no rules and regulations regarding diving with sharks and even fishing for Great White Sharks was legal. The operators of the cage diving boats got together and created the Guadalupe Island Conservation Fund, a non profit organization with the goal of helping create protections for the sharks and fund research that is critical for their protection.

In 2003 a young graduate student by the name of Mauricio Hoyos started studying the sharks at Guadalupe. He was living on the Island for 3 months at a time and the shark diving boats supported him with money, supplies as well as a hot meal and warm bed for the night when we were at the Island. Of course the world now knows him as Dr. Hoyos from various shark programs on TV as he continues to do research at Guadalupe.


In 2005 Guadalupe Island became a biosphere, the equivalent of a national park in the US. That designation allowed the government to establish rules and regulations for using the Island and also created revenues from the sale of permits for the boats and entrance fees for everyone visiting the Island. Every year thousands of shark enthusiasts visit Guadalupe to admire these animals up close and personal. The popularity of the White Sharks, combined with the typically crystal clear waters at the Island, have established Guadalupe as the premier White Shark diving site in the world. Numerous TV programs filmed there also made Guadalupe a household word for anyone watching Shark Week or Nat. Geo's Shark Fest on TV.



It wasn't until 2007 that the Great White Shark became a protected species in all of Mexico. Unfortunately, the enforcement of that ban was difficult, since there is only a small naval detachment at the south end of Guadalupe and poachers were still trying to catch these sharks. During the early years of the ban on White Shark fishing the shark diving boats "discouraged" more than a few boats that were illegally targeting these sharks. Over the years, the wannabe poachers have learned that they can't easily get away with poaching at Guadalupe because all the shark boats were keeping a watchful eye on the area.


That brings us to the present. Because of covid-19 the Island has been closed. That means that right now, with the Great White Shark aggregation season underway, there is no deterrent for any poacher that wants to kill these sharks. We already know from other locations like the Galapagos where a Chinese fishing trawler poached 300 tons of fish and Fiji, where poachers used the covid-19 shutdown of the shark diving activities to go and poach in the Shark Reef Marine Reserve, that when there is no effective barrier for illegal fishing, that the poachers have free reign. 
 
Can you imagine what would happen if a Chinese fishing vessel is targeting the Great White Sharks at Guadalupe? Fins from Great White Sharks are highly prized and that is without the value of the jaws and teeth that can fetch as much as $1k PER TOOTH! An action like this could wipe out the entire population of Great White Sharks at Guadalupe in a week!

For me these sharks are more than just another fish. Over the last 20 years of diving with them, I've gotten attached to not only Great White Sharks in general, but to numerous individuals, some of which I've seen every year since 2001. Lucy, Chugey, Scarboard, Tzitzimitl, Bruce, Geoff Nuttal, Luca Arnone, Slash Fin, Screaming Mimi, Crazy Tryss, Mau, Jacques, Thor etc. etc. I worry about them.

We have over 360 individual Great White Sharks in our database that is maintained by Nicole Lucas from the Marine Conservation Science Institute That database is maintained with photos from the cage divers and Shark Diver even has 4 trips a year that are specifically designed as a fund raiser to help keep that database up to date.

We hope that the Mexican authorities will reopen the Guadalupe biosphere as soon as safely possible, so that we can go out there once more and keep and eye on our sharks. Their lives may literally depend on it!

Cheers,
Martin Graf

About Shark Diver. As a global leader in commercial shark diving and conservation initiatives Shark Diver has spent the past decade engaged for sharks around the world. Our blog highlights all aspects of both of these dynamic and shifting worlds. You can reach us directly at crew@sharkdiver.com.

Thursday, January 24, 2013

What's More Dangerous Than a Great White Shark?

Cookie Cutter Shark
According to an article in Shark Year Magazine,  a study by the University of Florida shows that small cookiecutter shark feeds on flesh of great white.

While diving at Guadalupe Island we have observed, not only Great White Sharks with  Cookie Cutter bites, but also Elephant Seals and Beaked Whales. 

The way this little shark gets away with biting much larger animals is very unique. They produce bio luminescence, (living light) to attract predators at night. When the much larger predators come near the Cookie Cutter Shark, it takes a bite out of them. 

Unlike most predators, Cookie Cutter Sharks don't kill their prey, they just take a bite or two. I guess their feeding habits make for a sustainable food supply.

It just goes to show that even the feared Great White Shark is not immune from predators, and that size doesn't always matter. 

There is so much we don't know about the oceans and the creatures that live in it. Humans entering the water tend to be afraid of the unknown and that's why it's important that we keep researching and discovering the secrets the oceans hold. 

Seal with Cookie Cutter Shark bites
When it comes to making beaches safer for the public, hopefully a greater understanding will lead to policies and actions that are based on facts and knowledge instead of irrational fear.

The lead researcher for this study is Dr. Maurico Hoyos-Padilla, the main shark researcher at Guadalupe Island a man I have known for 10 years and am proud to call a friend. 

Way to go Dr. Mau!

Cheers,

Martin Graf
Managing Director 
Shark Diver

About Shark Diver. As a global leader in commercial shark diving and conservation initiatives Shark Diver has spent the past decade engaged for sharks around the world. Our blog highlights all aspects of both of these dynamic and shifting worlds. You can reach us directly at sharkcrew@gmail.com.

Monday, November 26, 2012

Bravo Mauricio - Isla Guadalupe Great

 

About Shark Diver. As a global leader in commercial shark diving and conservation initiatives Shark Diver has spent the past decade engaged for sharks around the world. Our blog highlights all aspects of both of these dynamic and shifting worlds. You can reach us directly at sharkcrew@gmail.com.

Saturday, June 2, 2012

Saving Great Whites In Mexico?

If you're a reader of this blog you know we like smart metrics based shark conservation efforts.

In fact we're almost fanatical about them and if they have a local flavor to them - more the better.

That's why you rarely see us posting about women hanging from fish hooks in soap stores because at the end of the day conservation noise like this makes no sense, saves no sharks, and is as about as self serving as an overworked and wheezing Frozen Yogurt machine on a hot July day.

So when smart initiatives being put forth by dedicated people pop up we're quick to point them out.

Case in point, the Mexican initiative to educate coastal fishermen along Baja and Sea of Cortez. Run by Dr. José Leonardo Castillo-Geniz and a host of others in Mexico this is real boots on the ground shark awareness at it's finest. And it is desperately needed as well.

You'll note our 5 year running expose on one fish market in Ensenada, Mexico where white shark pups regularly arrive to be sold as Swordfish and Mako for just pesos a kilo. White sharks are meant to be protected in Mexico and yet they appear in videos and images on a disturbingly regular basis.

Part of this is the nature of the fisheries.

Inshore long lining catches both tuna and swordfish and a healthy numbers of white shark pups. Many of these pups are dead when they arrive back to the boat and asking a small, poor fisherman, to dump a carcass worth a few dollars makes little sense. But reminding this same fisherman that these animals are protected does make sense because for those few animals that arrive back to vessels alive, or are still alive in nets they now have a fighting chance.

Nothing in this world is perfect when it comes to conservation initiatives. But efforts like these, targeting remote fish camps and leaving behind great POS material really makes a fundamental difference and we are thrilled to see it being done. Kudos.

Thanks to the following folks in Mexico who had a hand in this effort:

Pam Baker EDF
Fernando Aguilar Club Cantamar
Juan Carlos Cantu of Defenders of Wildlife Mexico
Dr. Mauricio Hoyos-Padilla

About Shark Diver. As a global leader in commercial shark diving and conservation initiatives Shark Diver has spent the past decade engaged for sharks around the world. Our blog highlights all aspects of both of these dynamic and shifting worlds. You can reach us directly at sharkcrew@gmail.com.