Hammerhead sharks of the genus Sphyrna are members of the family Sphyrnidae. The only other genus of Sphyrnidae, Eusphyra, contains only one species, Eusphyra blochii, the winghead shark.

Major declines in large sharks along the U.S. coast have in turn triggered declines in shellfish and reduced water quality, proof that the ocean's food web is collapsing, a groundbreaking new study reveals.

Wiping out nearly all the world's sharks is leading to collapse of ocean food web and producing expected impacts like loss of shellfish and reducing water quality a new study has found. Whooops, transforming the Earth w out a clue as to what we're doing.

Removal of the apex predators in the Atlantic has had knock on consequences in the marine food web.