"Vaquita" is Spanish for "little cow", and is the smallest porpoise in the world. Vaquitas lives exclusively in the shallow, turbid waters within Mexico's upper Gulf of California (also called the Sea of Cortez). The species is instantly recognisable thanks to its characteristic dark rings around the eyes, and its black lips. Unfortunately, this lovely cetacean is currently on the brink of extinction, and currently listed as Critically Endangered by the IUCN Red List ; the steep decline in abundance is primarily due to bycatch in gillnets from the illegal totoaba fishery. In fact the WWF estimates that there are only about 10 vaquitas alive today (source: https://www.worldwildlife.org/species/vaquita), and so the species is on the verge of extinction.