Jason Key made objects swim with this FX.
JangaFX's Principal VFX Artist Jason Key shared a fantastic underwater effect made in EmberGen. He submerged different shapes in the water, making them "swim" pretty realistically, with the liquid responding appropriately to movement.
While Key used EmberGen, JangaFX is going to introduce LiquiGen very soon, so anyone will be able to create something similar. The live stream for JangaFX Q2 2023 update will start later today.