How long do most dolphins live? Do you think keeping dolphins in captivity shortens their life span?
We don’t know how long most dolphins live because we haven’t studied them. For bottlenose dolphins, captivity seems to have no effect on life span compared with wild dolphins. We haven’t kept the other species long enough to tell. Do killer whales eat other dolphins? And if they do, why do they eat their own kind? Yes, killer whales eat other whales and dolphins. They really aren’t eating their own kind (cannibalism) because they are eating different species. Do dolphins digest the entire fish, including bones? Just about the entire fish is digested. First the meat and then the bones. About the only parts that aren’t digested are the tiny ear bones. That is fortunate for us biologists because we use the fish ear bones to tell what kind of fish the dolphins have been eating. How fast do dolphins swim? How far can dolphins travel before they have to take a break? Some dolphins can swim 20 30 miles per hour for short periods. However, most species haven’t been clocked. Dolphins can probab