Nensu kneeled down beside them, as soon as Midoriya proposed to find a strategy. They were completely surrounded, and fighting their way out, might end up drastic. Tsu’s Quirk allowed her to have superior swimming and leaping, a tongue that can stretch up to 20 meters, stick to and climb vertical walls, as well as produce numbing venom; like a typical Frog, while Mineta grows strongly-adhesive and detachable hairballs from his head. 

“Obviously, I can freeze [i]and[/i] burn things, but not for too long. My first suggestion would be, to freeze the water”, Nensu pointed out.