Sharpest sense of smell
Last updated: October 13, 2017 at 14:26 pm
Some shark species can detect less than one part per million of blood in seawater. The white shark (Carcharodon carcharias) can reportedly smell a seal rookery from two miles away. With their unusually large nares (nostrils), Greenland sharks (Somniosus microcephalus) are highly adept at locating decaying carcasses on the sea floor. Shark nostrils, which are located on the underside of the snout, are used only for smelling.