Since the Loch Ness Monster is a fictional creature, it is impossible to know what it might eat. Although several people have claimed to have seen the Loch Ness Monster, nicknamed "Nessie," its existence has never been substantiated.
Experts suggest that a large, air-breathing mammal like the Loch Ness Monster could not survive on the limited availability of food sources in the Loch. The low fish population suggests that such a creature would have to exit the water in order to find sufficient nourishment. People who claim to have seen the Loch Ness Monster describe it as 30 feet in length, with a neck that extends at least 6 feet.