Vaquita (Phocoena sinus)
The Vaquita is a porpoise and probably the smallest of all cetaceans, reaching a length of 1,2-1.5m (4-5ft). It lives solely in the northern part of the Gulf of California and the population is estimated to around 100-300 individuals, sadly on the brink of extinction. It is probably the most endangered marine mammal in the world and is considered to be evolutionary extinct and globally endangered (EDGE). Vaquitas are mostly solitary, but have been observed in smaller groups of up to ten individuals.