Dolphins can tell humans apart from other sea creatures using their sonar!

Dolphins and humans, both being mammals, share a more similar skeletal structure than dolphins do with other sea creatures. Scientists think that they are able to recognize humans using this sense. They even appear to be fascinated with pregnant women, because they can sense the embryo growing inside them!

Dolphins also help drowning victims by bringing them up to the surface, presumably because they understand that mammals, like them, can also drown. Check out the video for more info!