A cichlid using a shell to attract a mate.
Jordan Wilson reveals the traditional methods of harvesting herring eggs from hemlock.
Tiger sharks feast on Green Turtles drawn to a remote island to lay eggs
Richard Fitzpatrick using a specialist piece of equipment to tag a tiger shark.
Sanjayan describes why a snail is more dangerous than a hippo.
Expert Jay Stauffer explains why the problems of Lake Malawi are a shallow water issue.
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