Answer:
he gives his crew wax to put in their ears and has them tie him to the ship, giving them strict orders to not untie him.
Explanation: Once they have passed the Sirens' island, Odysseus and his men must navigate the straits between Scylla and Charybdis. Scylla is a six-headed monster who, when ships pass, swallows one sailor for each head. Charybdis is an enormous whirlpool that threatens to swallow the entire ship.