Naked Oceans

Naked Oceans episode

Fri, 11th Feb 2011

Sex on the Sea Bed

Aurelia aurita (c) Tihomir Makovec

Valentines Day is here and this month on Naked Oceans we reveal some of the unusual mating habits of ocean animals. How do they track down a mate in the enormous oceans? What happens if they are stuck firmly in place on the sea floor? And what does all this mean for our efforts to protect ocean life?

We find out what happens when the animals that build coral reefs take part in a huge, synchronised love-in. We call in on the Cayman Islands to discover how the spawning habits of many fish put them in grave danger of being overfished. And we find out how jellyfish make more jellyfish and whether these prolific beasties really are going to take over the oceans.

Plus, we find out from a gender-bending Critter of the Month what life is like being both a male then female.

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In this edition of Naked Oceans

Full Transcript

  • 01:42 - Oysters in trouble

    Oysters are considered to be a culinary delicacy, but a new piece of research has found that 85% of all oyster reefs have been lost globally.

  • 04:24 - World's first deep-sea mine

    Papua New Guinea gives go ahead for the world's first deep-sea mine. Expert calls for urgent conservation plans.

  • 07:59 - A mating problem for Nassau groupers

    When thousands of Nassau groupers gather to mate on Caribbean coral reefs, fishermen find them an irresistible target.

  • 15:39 - Coral reef mass spawning

    Coral reefs have evolved a spectacular solution to the problem of having sex while being rooted firmly to the seabed.

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