The creature's mind is not easily manipulated. Sam, like most telepaths, has been trained on human minds and processing those patterns as metaphors and imagery but here she's faced with a lack of that. Or rather, a mess of concepts and patterns, most of which pertain to aquatic life-forms and water in some way. Sleek shapes dashing through the waves, water gliding around a figure, membranes catching water resistance to propel themselves, the caress of current on gills spread wide and the rush of oxygen. Vibrations in a grid of water molecules, flow of various energies through it, surface tension knitting bonds like flexible sheaths. Microscopic stinging cells, calcified legs, aimless drifting in the currents. It's like a patchwork of things and there, connecting them together, is where Sam finds the most familiar pieces. Common themes linking disparate pieces together like a dream or free-associating poet. But none of them pain, the closest she can find is concepts of a coherent structural 'wholeness' and the threat to it. She's not really hurting the thing the way a person would, but the concept of injury, of a loss of cohesion translates.
In the real world, the leg injured by Will sags a little as cracks widen from strain and blackish-blue blood oozes from it. Above Bruce climbing the two injuries inflicted to the creature's bell suddenly weep chunks of gelatinous mass that dislodge the branch. Deeper inside the 'eye' is deforming like a bubble inside a lava-lamp, then suddenly contracts into a
strange oscillating shape that Tosh might recognize as an irregular polyhedron. Not something that should really exist as a 3-dimensional shape.
The creature's tentacles slumps down and let go of Sam, who falls to the ground, seemingly unconscious.
Elsewhere...?Sam is plummeting through the kaleidoscope of concepts that make up the strange creature. Some part of her knows where she is. This is the creature's 'Spark'. It's equivalent to her Fractal Tree, it simply sits that much closer to the surface, no human thoughts, no Astral Layer to shroud it. And she's fallen right down into it, a fluid, elegant cloud made of silver-scales of darting fish.