One of 17 sturgeon species belonging to the Acipenser genus, Chinese sturgeons have a sharklike form, with large pectoral fins, a rounded snout, and rows of pronounced ridges running the length of ...

Also known as the Polynesian tree snail or niho tree snail, the Partula snail (Partula nodosa) is actually one of several snail species of the genus—all of which are in danger of extinction.