Spinner Dolphin

Overview

The spinner dolphin is a small, slender cetacean widely recognized for its remarkable acrobatic displays, during which it rotates rapidly around its longitudinal axis while leaping from the water. These highly social animals are found in tropical and subtropical oceanic waters globally, often congregating in large schools.

Distribution & habitat

This species inhabits warm, deep oceanic waters across the Atlantic, Indian, and Pacific Oceans. While primarily pelagic, many populations are resident near oceanic islands and coastal areas. In these regions, they often follow a predictable daily routine, moving into sheltered bays or lagoons during daylight hours to rest before heading offshore to forage.

Appearance

Spinner dolphins are characterized by an extremely long, thin beak and a slender body. Their coloration typically features a dark gray back, a white belly, and a pale gray band separating the two. The dorsal fin shape varies, ranging from slightly curved to erect and triangular; in some adult males, the fin may even cant forward.

Biology & behavior

Known for their complex social structure, these dolphins travel in groups that can range from a few dozen to several hundred individuals. They are active predators that feed primarily on fish and squid. Their famous spinning behavior is thought to serve various social functions, including communication or the removal of parasites.