8/8 How animals from in and around the sea make use of coastal areas.
7/8 How tides create opportunities for marine life, as dolphins play a deadly game of catch.
6/8 This programme focuses on the amazingly fragile ecosystems of the world's coral reefs.
3/8 Looking at predatory skills of whales, dolphins, tuna, shark and rapier-nosed billfish.
4/8 A look at the survival techniques of creatures in the Arctic and Antarctic.