Extinction alert issued for Mexico's threatened vaquita porpoise

FILE PHOTO: A mother and calf vaquita, a critically endangered small tropical porpoise native to MexicoÕs Gulf of California, surface in the waters off San Felipe, Mexico in this handout picture taken in 2008. Paula Olson/NOAA Fisheries/Handout via REUTERS/ File Photo

MEXICO CITY (Reuters) - The International Whaling Commission (IWC) said on Monday it has issued an extinction alert for the endangered vaquita porpoise, whose population is estimated to have shrunk to less than a dozen, marking the institution's first-ever extinction warning.

The critically endangered vaquita, the world's smallest porpoise and native to Mexico's Gulf of California, has been imperiled by illegal gill net fishing for an endangered fish called the totoaba, whose bladder is highly valued in Asia.