Episode 223

"Zoro Sharpens His Fangs! A Fight With a Wild Beast!" is the 223rd episode of the One Piece anime.

Short Summary
On their way to "The Palace of the Sea God" Robin's group meets an entranced Zoro. It appears that Zoro wants to fight, so Luffy urges the others to keep going without him. They apprehend the boy that they had believed had stolen their memories. However it is revealed that the seahorse was really stealing their memories. Zoro returns, still entranced, but Luffy is nowhere to be seen.