Though it’s mostly small sharks who eat this diet today, Ptychodus sharks fed on the much larger ancestors of these animals. These include the 9-foot (2.7 meter) mollusk, Platyceramus, and the 6 ...

A great white shark died after just three days of being showcased in a Japanese aquarium, which said it was the first in the world to feature an adult great white. Photo: Okinawa Churaumi Aquarium ...

New assessments by the International Union for Conservation of Nature (IUCN) show 316 chondrichthyan species – sharks, rays and skates, and chimaeras – are now threatened with extinction. “These ...

A landmark decision to regulate the trade in sharks for shark fin soup is bound to have ramifications for Japan, a key exporting nation. Blue sharks were among 54 species of requiem sharks that ...

It is no secret that there is a worldwide extinction crisis plaguing the world’s sharks, and this crisis is fueled primarily by anthropogenic sources. In addition to overfishing, pollution, and ...

A shark only just formally discovered might already be extinct - a fate no shark has yet suffered in the human era - while an Amazon river dolphin has become endangered, a Red List of species in ...