Steller’s Sea Cow Have you ever met a prodigious manatee or dugong? Georg Wilhelm Steller has, this marine mammal was called Steller’s sea cow. This prehistoric animal was discovered in 1741 and disappeared from the face of the earth in 1768. Steller’s sea cow is an important animal to learn about because of the way they looked, the time period they lived in, and the surprising facts about them. One way to understand Steller’s sea cow is to know what they looked like and why. First of all, this