Dear Andrea, Dolphins, small whales, are social animals. Small groups of males swim separately hunting and watching out for each other.
Dolphins communicate through a mix of sound, body movements, and postures.
Dolphins stay with their mothers for 3-6 years. Whistling is a form of communication that dolphins use to talk to each other, they each have a signature whistle like a name. Dolphins have been known to help each other when they are in danger or injured. Dolphin mothers are very devoted to their calves and make sure they stay close away from danger. To hunt they sometimes form circles to herd fish or break up into smaller groups to help each other out.