Tracing the coastal regions of the world's great oceans and the creatures that depend on these areas for food and reproduction. Featured: marine iguanas forage for algae on the coastline of the Galapagos Islands; thousands of sea turtles lay eggs en masse on Costa Rican beaches; huge male elephant seals on Antarctic shores battle for mates. Also: graphic footage of killer whales hunting and killing seal pups. Narrated by David Attenborough.
animal-behavior, exploration, ocean, sea-life