The frilled shark has a long, eel-like body that can grow up to 6.5 feet (2 meters) in length. The body is dark brown or gray, with a cylindrical shape that tapers into a flattened tail.

A frilled pygmy octopus hitched a ride on a diver’s fin in Port Phillip Bay, off the coast of Portsea, Victoria, with the encounter marking only the second time the species has been observed in the ...