Manatees

Manatees are large, fully aquatic, mostly herbivorous marine mammals sometimes known as sea cows. There are three accepted living species of Trichechidae, representing three of the four living species in the order Sirenia: the Amazonian manatee, the West Indian manatee, and the West African manatee. Gestation period: 11 & 12 months, Speed: up to 19 mph. Few facts about Manatees: The cow-like creatures are thought to have inspired mermaid legends. ... Manatees never leave the water but typically come up for air every 5 minutes. ... Manatees are more closely related to the elephant than they are to other marine creatures.