Shark cannibalism? A bizarre photo from University of Delaware oceanography researchers sure looks like it, and manages the unlikely feat of making sharks look even more frightening than they already ...

Large litters come at a cost, and domestic piglets are often born into intense competition for both milk and personal space.

Forbes contributors publish independent expert analyses and insights. Márquez is a marine scientist and science communicator Sand tiger shark in an aquarium. (Photo by: BlueRed/REDA/Universal Images ...

They may look mean, but sand tiger sharks are typically not aggressive toward humans. Also sometimes known as the grey nurse shark, these sharks live in coastal areas and hunt for food in reefs, ...