As the 1.5m individual gets closer, I notice it's a shark egg, also called a 'mermaid purse', and it looks one of its kind! Is this a case of cannibalism? A cheeky shark looking for an easy high ...

A huge variety of animals produce ... traditional idea of an egg. Sharks and rays are fishes with skeletons made of cartilage, grouped together in the class Chondrichthyes. Their egg cases are ...