In the 9th Pokemon movie, who is the Prince of the Sea?

In the 9th Pokémon movie, the Prince of the Sea is Manaphy. Manaphy is a Mythical Pokémon known as the "Prince of the Sea" because of its association with water and the ocean. This Pokémon possesses a special ability to communicate with and control other water-based creatures, making it a significant character in the movie's plot. Manaphy's unique powers, coupled with its royal title, establish it as the rightful Prince of the Sea in the Pokémon world.