How does Poseidon hamper Odysseus' journey?

Poseidon hampers Odysseus' journey primarily out of revenge for the blinding of his son, the Cyclops Polyphemus. As Odysseus sails home from the Trojan War, Poseidon creates violent storms and treacherous seas, making it difficult for him to navigate. This divine wrath leads to numerous hardships, including shipwrecks and the loss of his crew. Ultimately, Poseidon's interference prolongs Odysseus' journey and adds to the trials he must endure before returning home.