Dolphins may look like fish, but they’re mammals that have adapted over the years to water. Dolphins perform body thermoregulation through a set of internal resources that evolution provided them.
The overall anatomy of the dolphin is very detailed, and designed well for them to survive in the water. They are marine animals, spending their entire life in the water.
There are many studies out there that compare the size of brains from one living thing to the next.
Wild Bottlenose Dolphin Close-up.
Secrets of Dolphin Swimming. Researchers want to discover the reasons that make dolphins excellent swimmers.