Dusky dolphins, for example, are found south of the Equator, only near New Zealand, Peru, and Argentina. Dolphins spend their time in small groups of five to seven individuals. The groups come together to play, feed and find mates, then separate. Dolphins often rejoin a group later, often with different family members or friends. This pattern of behavior is called. . .
Fission means separating and fusion means joining.
Dolphins behave this way throughout their entire lives. When dolphins play they. . . And when dolphins fight, they don't rub each other, and they approach each other directly or at right angles. Scientists can identify individual dolphins by size and physical markings such as. . . Scars come from wounds inflicted by other dolphins when they fight or play, or from sharks and other predators.