Who are Poseidon friends?

Poseidon, the Greek god of the sea, had several notable friends and allies, including the other Olympian gods, especially his brothers Zeus and Hades. He also had strong connections with various sea creatures, such as dolphins and horses, which he is often depicted with. Additionally, Poseidon was known to have friendships with mortal heroes like Perseus and Theseus, who often sought his favor or assistance in their quests.