Vaquita are found in the northern Gulf of California off the coast of Mexico. They are the rarest and smallest marine mammal with a length of up to 5 feet and weight up to 120 pounds. They have large dark circles around eyes and dark lips. Dark circles around eyes give them a bovine appearance - vaquita is "little cow" in Spanish. Also, known as the "panda of the sea." Sometimes the darkness from lips reaches towards the pectoral fins which gives the impression of them smiling. Their backs are dark gray, sides paler gray, and bellies are white with gray markings. They are diurnal.