The Vaquita

The vaquita (scientific name phocoena sinus) is a subspecies of porpoise that inhabits the shallow waters of the shore of the northern Gulf of California. It can grow up to 5 feet tall, and it can weigh up to 120 pounds. Its eyes have a large, dark ring around them, and its lips have dark patches on them in the form of a thin line connecting its mouth to its pectoral fins. As an older animal, its sides are pale gray in color, its dorsal surface is dark gray in color, and its ventral surface is white in color with long, light gray markings on it. However, as a newborn, its overall coloration is darker, particularly the area from its head to its dorsal flukes, which is gray in color.

The vaquita is the world's rarest marine mammal, and it is also classified as a Critically Endangered species. It is this close to becoming extinct because much of its population gets entangled in and, therefore, drowned by gillnets used to catch other marine species. Because of this, the World Wildlife Fund's (WWF's) effort to save it consists of developing more vaquita-safe fishing technologies, improving the ones that already exist, and replacing gillnets with both of these.

Source for picture and all information: https://www.worldwildlife.org/species/vaquita