An anthro or monster guy with shark traits shows up, usually sporting fins, a tail, gills, and a mouth full of sharp teeth on a lean or bulky male body. Scenes lean hard into rough M/M sex with toothy grins, aggressive fucking, and a predator vibe where he pins a guy down and breeds him. Artists often play up slick skin, ocean colors, and the contrast between cute “boy” energy and a seriously dangerous-looking maw.