With fewer than 30 vaquitas remaining and the idea of rescuing some by capturing them and placing them in human care no longer considered viable, conservation action is now focused on enforcement and net removal, with enhanced effort during the totoaba spawning season. For current information on the vaquita’s population status and conservation efforts, including necropsy reports, please see the latest CIRVA report.
The tiny vaquita porpoise (Phocoena sinus) is found only in the shallow waters of the northern Gulf of California, Mexico. It is the most endangered of the 128 marine mammals alive in the world today. The Comité Internacional para la Recuperación de la Vaquita (International Committee for the Recovery of the Vaquita), an international team of scientists established by the government of Mexico and known by its Spanish acronym CIRVA, estimated about 200 vaquitas remaining in 2012. By 2014, CIRVA estimated that about half of them had been killed in gillnets, leaving fewer than 100 individuals. Of these, fewer than 25 were likely to be reproductively mature females. A report prepared by CIRVA in May, 2016 presented an even more dire estimate, finding only 60 vaquitas remaining. This represents a decline of more than 92% since 1997.
Then in 2017, an already desperate situation has worsened. CIRVA issued its eighth report in February, finding that only 30 individual vaquita porpoises remain. Analysis of the 2016 Acoustic Monitoring Program data has shown that almost half of the remaining vaquita population was lost between 2015 and 2016. This shocking new report shows that illegal fishing activities, particularly the setting of large-mesh gillnets for totoaba, continue at alarming levels.
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