![lt= two common dolphins jumping out of the ocean](/books/island-of-the-blue-dolphins/images/960-NOAA-Common-Dolphin_1.jpg?maxwidth=650&autorotate=false)
Quick Facts
Type: Mammal
Diet: Carnivore: Squid, fish, krill
Average lifespan: 40 years
Average size: 6–8 ft.
Average weight: 180–330 lb.
Did You Know?
Common dolphins are extremely smart. Some dolphins have even been able to receive and follow instructions given to them by their trainers in a kind of sign language!
Last updated: November 9, 2018