Jason and Odysseus have both meet the Sirens when travelling on the sea.
Odysseus and his crew, on the way from Troy, are thought to be the only sea travelers that could withstand the Sirens' luring songs. Odysseus knew of the lure of the Sirens. He had all his men stuff their ears with beeswax, so that they could not hear, then he instructed them to tie him to the mast of the ship so he would not jump off and drown. Odysseus needed to hear the songs so that he would know when it was safe to let his sailors hear again.
According to late Classical writers, the Sirens were fated to die when any sailor who heard their song passed by unharmed. After Odysseus had done so, they flung themselves into the sea and died.
The second other person who was able to get past the Sirens was Orpheus, who drowned out the Sirens' voices by playing his lyre louder than them.