It was Charybdis. Together with Scylla, they live near a narrow channel where Odysseus and his man passed. Odysseus had to choose between Scylla or Charybdis. He chose Scylla and lost some of his men. If he had chosen Charybdis, he would have lost his men as well as his ship. Some say Carybdis is just a giant whirlpool. Others see Charybdis as monster with a huge mouth. The whirlppol that Charybdis creates is capable of dragging a ship under water.