Swimming and underwater content?

[Malakhim]

Why do so many people think WOW invented jumping and swimming? Or that it makes the game cartoony. Other ff games(FFX) had swimming and it was not meant to be cartoony.

Yes, but it made sense within the context of Spira/Zanarkand. Tidus and Wakka are Blitzball players, which is essentially water polo mixed with soccer. It makes sense that they'd have a high level of aquatic mobility and breathing due to their conditioning. Also if you'll notice, whenever you came to a pool of water in that game, you were automatically limited to Tidus/Rikku/Wakka, because it wouldn't make any sense for any of the other characters to have any sort of underwater ability.

Although it hardly made sense that Wakka's ball could move like that underwater, but that's a minor detail.