Like Galaxy's Child
A big fat leopard spotted tadpole shot through a few cm of water.
Swimming slowly above a rock, it reminded me of the Star Trek: The Next Generation episode "Galaxy's Child", in which a huge spaceborne animal latched on to the hull of the Enterprise D to siphon the starship's energy. This tadpole looks like it's a giant creature high above the surface of a dead world.
Or not. :)