Diablo's Ocean

Diablo's Ocean (Japanese: 魔の海域 Demon's Ocean) is an -exclusive location in the Sinnoh region. It was featured in Cheers on Castaways Isle!. It is located somewhere between Iron Island and Chocovine Town.

Diablo's Ocean is an area where many ships have their instrumentation go haywire or even break due to a special magnetic field being given off by meteors floating around.

The area is also home to an island, where the local  were gathering meteor fragments to help restore a  whose crystal landed on the island during a storm. The Mythical Pokémon was later revived after receiving help from Ash's Pikachu and Dawn's Piplup.

Trivia

 * Diablo's Ocean is probably based on the, seeing as naval and aerial vehicles drown in this ocean. This is further enforced by the Japanese name of "Demon's Ocean", similar to the alias of the Bermuda, "Devil's Triangle".

Oceano del Diablo 魔之海域