he ate them
he was tied to a pole on his ship and he managed to ignore the sirens cuz he was tied to the pole
Yes; the Sirens sang their enchanted song, and attempted to lure Odysseus and his men to their doom.
They Sing
He was warned about the Sirens by one of the spirits he met in the underworld.
Because Odysseus has to complete what Circe's has told him to do. It was a test to see is Odysseus had the courage and strength to listen to the Sirens. This would strengthen or weaken his leadership skills to the reader. And of course it strengthened his leadership skills.
Eleanor describes how Odysseus climbed on Circe's roof to watch the plunders. While on the roof, Odysseus heard the voice of the Sirens in the distance, which tempted him with the promise of knowledge and experience.
the sweet songs of the sirens lead their men to death
He plugged the sirens ears and avoided the Charybdis
The sirens are a danger that Odysseus and his men must pass to return home.
he made his crew put wax earplugs in their ears. he himself wanted to hear the sirens beautiful music, so he asked his crew to tie him to the mast, the foundation of a sail. Odysseus's crew ties Odysseus very tightly to the mast, and disarmed him. When the were going past the sirens, Odysseus was screaming and yelling at his crew to let him go to the sirens. The crew obviously did not hear him because they had the wax ear plugs. That is how Odysseus saved his crew from the sirens.
Book 12
Circe