Piloting - The use of familiar landmarks to find a goal or direction. True Navigation - The ability of an animal to orient towards a goal without the use of familiar landmarks. Fish move between areas of low and high productivity. Animals move between protected breeding areas and feeding areas. Gray Whales - Spend summers feeding in the rich waters of Arctic Ocean.
Gray whales migrate to breeding areas in Mexico.
Anadramous fishes such as Salmon - Spawn in freshwater streams and then migrate thousands of miles out to sea. Later return to their natal spawning grounds to reproduce. Catadramous fishes such as American Eels - Spawn in the Sargasso Sea but migrate to freshwater rivers in North America and Europe. Later return to the Sargasso sea to spawn. Green sea turtles undergo spectacular homing migrations to Ascension Island to lay their eggs.