A vaquita. The vaquita (Phocoena sinus) is a critically endangered porpoise species endemic to the northern part of the Gulf of California. It is considered the smallest and most endangered cetacean in the world. Paula Olson, NOAA / Public domain, via Wikimedia Commons https://commons.wikimedia.org/wiki/File:Vaquita4_Olson_NOAA.jpg
A vaquita. The vaquita (Phocoena sinus) is a critically endangered porpoise species endemic to the northern part of the Gulf of California. It is considered the smallest and most endangered cetacean in the world. Paula Olson, NOAA / Public domain, via Wikimedia Commons https://commons.wikimedia.org/wiki/File:Vaquita4_Olson_NOAA.jpg