>>39289823If we look at the location where Gastrodon is found in Sinnoh and compare where that would be in Hokkaido in Japan, we can learn a few things.
The west ocean is closer to mainland China, occupying the space between Japan and the continent, suggesting that western Gastrodon comes from calmer, colder waters.
The east ocean is part of the Pacific, suggesting that eastern Gastrodon comes from rougher, warmer waters.
So it makes much more sense that eastern Gastrodon would be found ANYWHERE in the warm, rough oceans of the Alola region.
Biology.
