Manatee – Manatee are another species that was on the endangered lists but is slowly recovering. They are common in shallow inshore waters around the Keys. Manatees often hang out in canals. They eat vegetation and algae, and are very slow moving and docile creatures. They can grow very large like 1000 pounds and often swim in small groups. There are many areas in Florida designated as no wake zones, where boats have to drive slower. At one point high speed boats were killing many manatees, because the manatees swim just below the surface and are not fast enough to avoid the propellers of boats. Older manatees often have huge scars on their backs where they have been hit by boat props.