5/15 A pair of gyrfalcons and a pack of Arctic wolves are struggling to raise their young.
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 the hunting skills of whales, dolphins, tuna, shark and rapier-nosed billfish.
1/8 This travels to the very depths of the seas, to reveal a spectacular variety of life.
A guide to strange and delightful buildings which were created for animals. (1985)