DiveCareDare

DiveCareDare

Tony Isaacson - Diving Naturalist. As a PADI Scuba Diving Instructor, AWARE shark conservation specialist and adventurer, I have dived in some of the most amazing diving locations on the planet. I have been scuba diving since 1970 and have logged over 3000 dives in more than 20 countries around the world. I’ve documented the marine diversity in exotic locations like Komodo, Fiji, Vanuatu, PNG, Tahiti and the Galapagos Islands. In 2013, I inspired Navy Clearance Diver and bull shark bite survivor, Paul de Gelder and a 60 Minutes film crew to dive with bull sharks at the Ultimate Shark Encounter in Fiji. I was a consultant on the making of documentaries on Leafy Seadragons (for Channel 9), The Great Barrier Reef (with Richard Fitzpatrick for the BBC) and filmed underwater footage in Indonesia and off the Queensland and New South Wales coasts for TRAVELTHERENEXT TV. In July 2014, I headed to South Africa for the Sardine Run and dived with the great white sharks from Durban to Cape Town, South Africa. I’m a great advocate for sharks, sustainability and ecotourism, and I regularly volunteer for Reef Check and Grey Nurse Shark Watch in Australia.

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Diving Videos

Monthly Archives: December 2014

REMORAS | SEA LIFE WITH A GOOD SUCKER | A DIVE BUDDY THAT STICKS TO YOU

Diving Videos

Remora remora is the name for the common remora. They have a highly modified dorsal fin that expands during their development to become an efficient sucker disk on the top of their head. Remoras attach to sharks, mantas, whales, turtles, ships, divers and just about anything to save energy until their next feed. It’s hard to imagine that powerful, open ocean swimmers like mahi-mahi [dolphinfish] and amberjacks are related to remoras. Your opinion about these opportunistic freeloaders might change when you consider what 50 million years of evolution has done by tinkering with the muscles and bone structure of a dorsal fin to produce their quirky edge for survival.

In nature there are relationships like predator-prey and parasitism where one half of the equation benefits at the expense of the other. There is mutualism, a form of symbiosis where both organisms benefit from the relationship to the extreme where one cannot survive without the other. Commensalism describes relationships on a scale between parasitism and mutualism. Where does the relationship between remoras and other sea life belong?

Does the removal of parasites as a service to a host improve survival, longevity or the energy budget of a host like this humpback whale? It must have a hundred or more remoras that increases the effort needed to move through the ocean using precious fat reserves for energy. This mother is feeding its calf on the long journey to summer feeding grounds off Antarctica, so how far south do remoras go before their free ride gets too cool to survive? Do remoras provide a parasite removal service that is worthy of them tagging along or is this an extreme form of commensalism that’s nudging parasitism as a way of life? Remoras are up their with platypus and other anomalies of the natural world that make me wonder what the creator was on while doodling the prototype or was the design brief given to a committee? Continue reading

HOT VIDEO PIX:

SEPTEMBER 2015 HOT VID PIX: Banded Sea Snake Eats Moray Eel - a fight to the death. Watch what happens at the 3.20 mark... AUGUST 2015 HOT VID PIX: Tears of a Mermaid - On Location: "Tigress" Tiger Shark Shoot Documentary, a Mctrax Motion Production With Jim Abernethy in the Bahamas. MAY 2015 HOT VID PIX: The Insatiable Hairy Frogfish - watch this fascinatingly 'fugly' creature catch and eat its prey. MARCH 2015 HOT VID PIX: Woman romances large eel! Meet Valerie Taylor and her unusual friendship with a large moray eel... FEB 2015 HOT VID PIX: Divers off Costa Rica come across a giant manta ray tangled in fishing line. Watch how it allowed them to free it. What a life changing experience... DECEMBER 2014 HOT VID PIX: Flamboyant Deadly Cuttlefish - a short from Underwater Studios of Malaysia - taken on Kapalai island Sabah. Simply Stunning! NOVEMBER 2014 HOT VID PIX: Glow In The Dark Shark Attack! : Yet another goodie from BioPixels. We have never seen anything like this before, simply creepy but stunning! (Love that Red Epic slow mo camera guys - keep up the good work!) OCTOBER 2014 HOT VID PIX: Milking A Stone Fish: You heard it here! Dr Jamie Seymour from James Cook University talks about how to milk a stone fish, something I am sure we all need to know, ponder on and share, but never to personally try it at home. Love your work Jamie! SEPTEMBER 2014 HOT VID PIX: Ultimate Alien-like Spear Mantis Feeding On Fish In Slow Motion: Dr Jamie Seymour from James Cook University and Emmy Award winning cameraman Richard Fitzpatrick film club and spear mantis shrimps at 1500 frames per second. These guys just have too much fun 'at work'! AUGUST 2014 HOT VID PIX: Great White 4.5M Shark Bites Dive Rubber Ducky whilst filming on an Adventure Tour for the Sardine Run near Mossel Bay, South Africa. Thank you Riener for a fabulous interview on this most unusual behaviour of a great white. JUNE 2014 HOT VID PIX: Helping Out A Yellow Moray Eel - Gold Coast Seaway: Thanks to Dave Wyatt for this fabulous video of your helping out a poor helpless moray caught up in fishing wire as well as three hooks in its mouth. Good job Dave!

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