Is “vaquita” the name of an endangered species, a clothing brand, or a type of food? How about “saola”?

If you answered “endangered species,” you’ve beat more than half of Americans who were asked that same question. The vaquita, whose name is Spanish for “little cow,” is the most endangered marine mammal on Earth, with likely fewer than 30 left in their native Gulf of California.

Meet Some of the World's Most Endangered Animals Across the globe, species are vanishing at rates 1,000 times greater than ever. Meet five of the world's most endangered species, from tigers to turtles, through their portraits taken for National Geographic Photo Ark by Joel Sartore.

The survey also revealed that some participants thought certain animals, like bald eagles and humpback whales, were on the list. But those species were removed in 2007 and 2016, respectively, after their populations had stabilized.