No. Whilst it is a marine mammal, a manatee is not a cetacean. Along with dugongs, they are of the order Sirenia, not the order Cetacea. Whales, dolphins and porpoises only are cetaceans.
A manatee, also known as a sea cow, is a large marine animal that reaches over ten feet long and can weigh more than a ton (2000 pounds). Manatees are freshwater mammals that live in the waters off...
Manatees are water-dwelling mammals that feed on plant life. They are commonly known as the "sea cow", however they are not related to cows. there closest living relatives are elephants, hyraxes, and...
A Cetacean is an animal that belongs to the Order: Cetacea This includes Whales, Dolphins and Porpoises. Cetaceans are mammals fully adapted to Aquatic life and there are about 90 species.