Let's make organisms push food cells and other smaller organisms!

[theomgdev]

What about physics that lets organisms push food while moving and rotating?
Think of the evolutionary pathway it could open up. Perhaps, thanks to its shape, it is possible to see creatures that collect food in their mouths as they move. Or creatures that carry the food with them in a circular pouch to avoid losing it to other organisms!
Moreover, simple gravity-free sand grain physics would suffice.

Even think of large organisms that can push smaller organisms! Pushing these tiny organisms first from the kill cell to the mouth cell would open the door to huge whale-like organisms that feed on tiny organisms!