They can also be found in some warm temperate areas. Spinner dolphins are six to seven feet long and have a three part color pattern on their bodies. The pattern consists of a dark gray back, a pearl-gray side panel, and a white belly. Food Habits Spinner dolphins are carnivorous. Reproduction Spinner dolphins mate when their hormone levels are high, which is one or two times a year.
Spinner dolphins are polygynandrous.
The male senses when the female is ready to mate and pursues her. Mating happens within the school with no real mate selection. Adult females give live birth to one calf every 2 or 3 years. Gestation period averages 10.6 months. Behavior Spinner dolphins may occur in schools with as many as 1,000 individuals, but it is common to have 200 or fewer to a school.