1001 Space Earth Nature Evolution Fossils and Prehistoric Life Dinosaurs Simple Animals Insects and Spiders Fish Amphibians Reptiles Birds Sea Mammals Land Mammals Plant Kingdom How Plants Live Unusual Plants Ecology Conservation Animal Behaviour Pets and Farm Animals History Human World Science and Technology

Choose a Page:Which fish need lights?*How do fish breathe?*Which is the biggest fish?How fast can fish swim?What is unusual about the seahorse?How do fish float?How did the archer fish get its name?Can fish fly?How does a fish build a nest?What attracts sharks to their prey?Can fish generate electricity?Which fish needs a beak?Do all fish lay eggs? How do fish breathe? Fish need oxygen just as land animals do, but they get their oxygen from water rather than from air. The oxygen is absorbed out of the water into the fish's delicate, feathery gills. Blood vessels in the gills carry the oxygen to the body organs. An Atlantic cod   Previous: Back Book: 1001 Section: Nature Chapter: Fish