What It The Smallest Endangered Species?

The world's smallest and most endangered cetacean, the vaquita, is the second most threatened species. Found in Mexico, this tiny porpoise is often killed in gillnets and could soon be extinct. Environmentalists are working with local fishermen, local and international nonprofit organizations, and private sector and government officials in an unprecedented effort to save the vaquita, of which it is estimated there are only 150 remaining.