Sea Life: Essential Wildlife

Covering more than 71 per cent of our planet, the oceans are home to more than 230,000 species of fish, mollusks, crustaceans, and marine mammals. The marine ecosystems vary greatly; coastal areas, open ocean, deep ocean, shallow waters, and intertidal zones are all vitally important habitats to the organisms that live, breed, and hunt there. Unlike terrestrial habitats the marine environment is constantly changing and the organisms that reside in these complex habitats need to adapt to the...