The vaquita, a small porpoise found only in the Gulf of California, went extinct for a variety of reasons. First and foremost, they were victims of bycatch; because they shared the same waters as totoaba fish, which are highly prized in China for their swim bladders (considered a delicacy), the vaquita often got caught in gillnets meant for totoaba. Second, their population was already very small to begin with; there may have been only 60-80 vaquitas left in the wild by 2016. And finally, successively smaller newborns suggested that the vaquita may have been suffering from an inability to reproduce.