Shellos

Shellos is a Water-type region-exclusive Pokémon from the Sinnoh region. It evolves into Gastrodon after being fed 50 candies. West Sea is available in west of longitude 0 while East Sea is available in east of it.

Trivia

 * On April, 2019, there were various reports of both forms of Shellos appearing around the world. About ten minutes later, the spawns ceased and the Shellos were reverted back to event spawns.
 * Both forms of Shellos appeared around the world in the first half hour. Then they were taken down and became region-exclusive Pokémon few hours later.
 * Both forms of Shellos appeared around the world in the first half hour. Then they were taken down and became region-exclusive Pokémon few hours later.