With a name like Sirenia, you would think I would have gotten to this point sooner, and before anyone else, but I got here at last, a review of a sirenian. These docile aquatic animals are related to Afrotherians, making this another group of mammals that became fully aquatic and large, alongside the whales.
All Trichechus manatus Reviews
Manatee, adult and calf (Wild Safari Sealife by Safari Ltd.)
3 (2 votes)
Whales typically dominate the discussion of fully aquatic mammals, though Sirenians should be acknowledged for making the transition around the same time. As oppose to ungulates, these creatures are related to proboscids and hyraxes. Amongst the extant species, there are 3 that belong to the manatee genus (Trichechus).