Doing SFX in animation is a real skill. One that character animators dread. But sometimes the most complex ideas just require a simple tweak to a static image to make the scene come to life.
After literally years of trying to make realistic, or at least, believable oceans waves, Mark Stallard discovered a script built into Moho that does exactly what it says on the tin. It creates "Waves"!
It was right under his nose the whole time.