Manatee
There are three kinds of manatees. They are West Indian manatee, West African manatee, and Amazonian manatee. They are 8 to 15 feet from head to tale. Their color is grayish-brown.
Nocturnal
Some mammals are nocturnal. This is when you are active at nighttime.
Odontocete
These are members of the suborder Odonticeti. They are the toothed whales.