What is the name of the endangered porpoise species endemic to the northern Gulf of California, considered the world's most endangered marine mammal with fewer than 20 individuals remaining?

• A Manatee
• B Vaquita ✓
• C Dugong
• D Sea otter

The vaquita is the smallest cetacean species and is critically endangered, primarily due to entanglement in illegal gillnets set for the totoaba fish.