In higher latitudes, when the first storms of fall move over the waters, females and their young assemble into large companies to face the vigors of winter. They depend on their large numbers to find food and on their speed and caution for protection. Males live apart from these large herds of females. Although they remain in the same area, they stay a considerable distance away until the warmer spring season approaches. Further separation of the sexes occurs in nursery schools of pregnant and nursing females.
Dolphins are playful creatures.
The common dolphin is no exception. They are both active and boisterous. They do various flips and somersaults. They leap with their whole bodies out of the water. Smaller dolphins sometimes leap vertically.