A new species of shark that "walks" along the seabed using its fins as tiny legs has been discovered in eastern Indonesia, an environmental group said Friday. The brown and white bamboo shark pushes itself along the ocean floor as it forages for small fish and crustaceans at night, said Conservation International, whose scientists were involved in its discovery. The shark, which grows to a maximum length of just 80 centimetres (30 inches) and is harmless to humans, was discovered off Halmahera, one of the Maluku Islands that lie west of New Guinea. Bamboo sharks, also known as longtail carpet...