By Amy Woodyatt, CNN
Researchers say the sawfish is on the verge of extinction. (CNN)The sawfish is one of the ocean s stranger sights with its unique long, narrow nose lined with teeth, it resembles a hedge-trimmer or chain saw.
But the shark-like rays are on the brink of extinction, having vanished from half of the world s coastal waters, according to a new study.
Sawfish were once found on the coastlines of 90 countries. But now they are some of the world s most threatened marine fish, and are already presumed extinct in some 46 countries, researchers from Canada s Simon Fraser University said.