Earth's seas play a tremendous role in the planet's systems: Ocean currents transfer water and heat around the globe. Offering photographs and illustrations, this work shows how protecting the oceans requires protecting the entire planet, and describes the importance of setting aside marine reserves to save vital ecosystems.These slow- moving animals graze on sea grasses and can consume 10% to 15 % of their body weight each day. Both animals are enormous, up to 9 feet A baby manatee swimming at Homossassa Springs, Florida. (Kike Calvo/Vaamp;W/The Image Works) (3 m) in length and weighing up to 1, 900 pounds (860 kg). Manateesanbsp;...
|Publisher||:||Infobase Publishing - 2007|