>>12802
I'll list a few situations/ideas:
-Tied to a weight, like an ironball or anchor.
-Feet in cement.
-Tangled in kelp or a net.
-Body stuck somewhere, between rocks.
-Hand trapped in a clam.
-Locked in a cage.
-Trapped in a sunken ship or cave.
-Held down by another person.
-See through tank / shower.

As for character, I don't know what characters you like to draw, aside from Coco. I can suggest a few. I like characters wearing gear such as face goggles and foot fins.