Vaquita

Overview

The vaquita is a remarkably distinct, highly elusive porpoise found exclusively in the warm, shallow waters of the northern Gulf of California in Mexico. Its common name translates from Spanish as "little cow." As the smallest of all living cetaceans, it is currently recognized as the world's most endangered marine mammal.

Appearance

This small porpoise is easily recognized by its distinctive facial markings, which include prominent dark rings around the eyes and dark patches on the lips. It possesses a proportionally taller, more triangular dorsal fin than other porpoises, an adaptation believed to help dissipate body heat in its warm marine environment. Its body coloration is generally dark gray along the back, fading to a lighter gray or white on the underside.

Biology & behavior

Vaquitas are exceptionally shy and tend to avoid watercraft, making them difficult to observe in the wild. They generally travel alone or in very small groups consisting of a mother and her calf. Unlike highly vocal dolphins, they produce high-frequency clicks primarily for echolocation and communication, rarely leaping or creating noticeable surface splashes.