Atlantic White-sided dolphin
These dolphins live in the temperate and subpolar waters of North Atlantic. The average weight of a male is about 460 to 480 pounds. The average females weight is about 350 to 370 pounds. It has rounded snout and a short blackish beak.
Bottle-nosed dolphin
This kind of dolphin lives in the coastal waters of most tropical, subtropical, and temperate regions. Their average weight for both male and female is approximately 330 to 440 pounds. They are mostly black and white with a pinkish belly.