They have a highly developed sense of sound and a sonar system that helps them navigate in the ocean. They give birth to one calf at a time every few years and nurse their young. They are very protective of their young, who stay alongside their mother for up to three years. They are very protective of other members who become hurt. They support each other and even keep each other afloat if a member of the group is hurt.
Dolphins act in an excited manner in order to protect each other.
They swim violently and create whirlpools of water surrounding a threatened animal. Dolphins are found in waters all over the world. Some varieties are found only in certain areas of the world but the bottlenose, the most common dolphin, lives everywhere but the artic. There are numerous varieties of dolphins and they range from light gray to pure white to striped. Some have humps on their backs, some are sleek, and others are in between.