Yoshi is supposed to swim in this game but doesn't due to an oversight.
Seemingly, Yoshi is supposed to swim in this game (like in the other games such as Super Mario Galaxy 2), but due to an oversight, he forces to a death instead when trying to swim in water (which seems to be a minor bug, although the animations for Yoshi swimming go unused/still exists in the game's memory). Some other captures like Frog and Cheep-Cheep swim fine. Can you or someone make a patch so Yoshi can be able to swim in the surface for this game? I hope Nintendo patches this oversight in the next future update.
In order to win the bounty, you should fulfil the following requirements.
- Check if Yoshi's unused swimming animation is still present in the game's data. If not, rig the swimming animations for Yoshi from Super Mario Galaxy 2.
- Edit code via editing exeFS or some other editing tool? Open that tool and use that tool to fix the bug so that Yoshi can be able to swim again.
- Also, make sure to test the fix to make sure it works so I can reward you the bounty. (Go to Mushroom Kingdom, capture Yoshi and now swim in water)