The other , a small porpoise that lives in Gulf of California , Mexico , is near extinction . Thousands of swim bladders are likely then smuggled across the border to the United States and shipped to China -- where a kilogram can be reportedly worth much more on the black market -- leaving thousands of dead totoabas and tens of drowned vaquitas to rot . Juan Vidal , Robert L. Brownell Jr. and David Kaiya : Fewer than 100 species remain . They say Mexican , U.S. and Chinese governments must take swift and coordinated action . One way is if Mexico stops the illegal trade of totoaba , which often ensnares fish .
The other , a small porpoise that lives in Gulf of California , Mexico , is near extinction . Juan Vidal , Robert L. Brownell Jr. and David Kaiya : Fewer than 100 species remain . They say Mexican , U.S. and Chinese governments must take swift and coordinated action . One way is if Mexico stops the illegal trade of totoaba , which often ensnares fish .