Science Podcasts

Naked Oceans episode

Sat, 11th Sep 2010

Tracking sharks

Whale Shark (c) Jon Hanson

This month we submerge in the science of tracking sharks. How do we follow them, where do they go, and what do they get up to when we're not watching? We catch up with Ecocean's Brad Norman to find out how he was inspired by the stars to help track the biggest fish in the seas. Mahmood Shivji from the Guy Harvey Research Institute tells us about how cutting edge genetic tools are helping to track the trade in sharks fins. We go on a Great Egg Case Hunt and Boris Worm chooses our Critter of the Month.

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In this edition of Naked Oceans

Full Transcript

  • 06:00 - American Samoa bans the bag

    American Samoa has taken a bold step towards helping the oceans by declaring a ban on plastic bags for 2011.

  • 07:28 - Genetic tools to track the shark fin trade

    Around the globe, sharks are hunted unsustainably for their fins to make into soup. Mahmood Shivji tells us about how DNA extracted from a dismembered fin can tell us not only which species it came from but where in the ocean the shark lived.

  • 14:20 - The Great Egg Case Hunt

    We join the Great Egg Case Hunt on the Norfolk Coast with Sonia Revelley from Natural England, to help track down the whereabouts of skates and rays - the lesser-known relatives of sharks.

  • 20:45 - Whale sharks - stars of the sea

    They're the biggest fish in the oceans, but how to keep track of the beautiful, illusive whale sharks? With some help from the stars! Brad Norman, from Ecocean tells us about his pioneering work tracking whale sharks in Australia's Ningaloo Reef and beyond.

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