Kraken brain

It never saw Lara coming.
She hit it from behind and beneath, knifing through the water as if she’d been wearing a jet pack. She slammed the point of my brother’s kukri into the warty flesh of its head, then used the viciously sharp blade on its curving inner edge to begin opening up the creature’s flesh.
Hell’s bells. She meant to cut out its brain.
The kraken abruptly thrashed and twisted, its skin rippling with colors and textures as it turned on her, tentacles questing. It seized her around the hips and whiplashed her back and forth in the water, ripping her hands free of the knife and aiming to break her neck with the force of it.
The knife was still sticking out of the back side of its head. Or body. I’m not sure which it was—the whole thing was just warts and tentacles and that vicious biting beak. So I began kicking down, ignoring the burning in my lungs. Lara hadn’t gotten to cut very far before the thing had seized her, maybe twelve or fifteen inches.

Battle Ground Chapter 2, Page 13-14