[The Galra energy, burning and powerful as it is, cuts severely into the shark's jaw, although with how violent and single-minded with hunger it is, it doesn't give up so easily, intent on attacking right back.
So it shakes with its jaw locked around Keith still in one awful swing of motion that tosses him around in the water before releasing him, blood everywhere coming both from the monster and from Keith -- and then the same terrifying set of teeth are rearing to try to catch him again, and get at Shiro in the process. Two for the price of one? It probably isn't very prepared to deal with another attack from that alien tech, though.]