Select
If the tsunami that's heading for your village is fat you should try to select a different one to hit instead. You don't want to select fat tsunamis because they do more damage.
Imagine being at the tsunami store and selecting the least fat one there.
た, たい
おご, にご, よな
None
If you're having trouble selecting which one is the least fat just check to see which tsunamis are eating tacos (た). Only fat tsunamis will be eating them, so just look for one without a taco.
While you select the tsunami that's right for you. Keep an eye out for those fat taco-eating ones. And then stay away from them!