For me, there are few sharks out there that evoke the same sense of awe and admiration as Sphyrna mokarran; the great hammerhead shark. I’ve only seen one in all my years of diving, and that was just a fleeting glimpse; by the time my mind had registered that it was a great hammerhead, it had already disappeared. This brief sighting was on ourexpedition to Aldabra in 2008
There are many species of hammerhead shark; the ones you may be most familiar with are scalloped hammerheads. These are seen in large groups in many parts of the world, from the Red Sea to Costa Rica. The great hammerhead is an altogether different and more imposing animal.
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Contributed by Peter Richardson
Whales, sharks, dolphins and turtles splashed into the imaginations of thousands of Sri Lankan school children earlier this year when the Marine Conservation Society toured its Cool Seas Roadshow along the west and south coasts of the island.
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Tagging a whale shark is easy compared with other species such as, for example, bull sharks. Whale sharks spend a lot of their time very close or even at the surface and are relatively slow moving animals. So all it takes to be successful is finding a whale shark at the water surface and a snorkeller with a speargun. That’s what we did back in February 2006 off the coast of southern Mozambique. We attached marker tags and two pop-up satellite archival tags to whale sharks and at the same time took tissue samples. These samples helped to reveal the genetic structure of the Earth’s largest fish.
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The international shark attack file (ISAF), based at the Florida Museum of Natural History and considered the worldwide authority on human-shark encounters, recently published their 2008 Worldwide Shark Attack Summary.
The report identifies a drop in unprovoked shark attacks over the last year, with 59 in 2008 compared with 71 in 2007. That said the report also is careful to put this data into its historical context, showing that the number of attacks have generally increased over the last century.
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ABC’s Nick Watt spent the day cage diving with the SOSF Shark Centre’s very own Alison Kock, along with fellowShark Angel Julie Anderson.
After initially being completely aprehensive about his first great white shark encounter, Nick quickly discovers why these majestic apex predators are vital to the Earth’s oceans.
Watch the full video here.
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For me, there are few sharks out there that evoke the same sense of awe and admiration as Sphyrna mokarran; the great hammerhead shark. I’ve only seen one in all my years of diving, and that was just a fleeting glimpse; by the time my mind had registered that it was a great hammerhead, it had already disappeared. This brief sighting was on ourexpedition to Aldabra in 2008
