Pongo

The Pongo was a massive creature from medieval times in Sicily. It was described as a giant sea monster combining a tiger and a shark. It was believed to have consumed over five hundred people and kept a twenty mile perimeter around the island, attempting to make Sicily uninhabitable. It was eventually killed by the three sons of Saint George.

Citations:

Bane, Theresa. Encyclopedia of Beasts and Monsters in Myth, Legend and Folklore. United States, McFarland, Incorporated, Publishers, 2016.

Bassett, Fletcher S.. Legends and Superstitions of the Sea and of Sailors in All Lands and at All Times. United Kingdom, S. Low, Marston, Searle, & Rivington, 1885.