Polyphemus was back home, which was under the sea in an underwater temple, Poseidon had forcible carried the cyclops to the temple because he was refusing to leave the cave in hopes that he could find at least one sheep left- Poseidon even searched with him before he grew impatient and forced Polyphemus down with him. Poseidon wanted to make sure his son, his boy, was protected.. Polyphemus was mad at his dad for a while after 600 Strike because Odysseus was allowed to live, but as Polyphemus sat in his large wound and thought about things he was slowly realizing his father had killed nearly 500 men for him, and to top it off Poseidon even made a grassy enclosure outside of the temple with a fake sun, a gift from Polyphemus's cousin Apollo, and nice green grass with a few fenced in areas FILLED with sheep. Which Polyphemus loved dearly.
Poseidon was fully healed and has left the temple, trusting Polyphemus to be alone for a bit, Polyphemus sat in the sheep's enclosure, he was blind with a bandage over his eye- but he could hear their loud baas and and feel their soft wool.