Sharkie

We also set a shark line, baiting it with a bonito head. "Get a sniff at that, little sharkies", said Dave, as he lowered the fragrant mess over the side.

Source: wiktionary

Most of the levels have moving parts - things like lifts, or little sharkies swimming on and off the screen waiting to eat you up, or swinging cranes and rolling barrels ready to knock you over and squash you flat.

Source: wiktionary

The sharks coast inward, slowly. The DOORS open, splitting into halves lined with steel teeth, like that of a shark. / JUNI / Back to sleep. Good little sharkies...

Source: wiktionary

>Apparently, this guy […] devoted his >life to demonstrating […] that one could, in fact, stand in >chum-baited water surrounded by dozens of feeding sharks in perfect >safety. […] there's a thesis that's going to need a tiny bit of revision […] (as in fact, the shark […] revised *him* a bit, to the tune of a nice big chunk of his calf,[…]). Food for thought for the little sharkie too. How come I didn't do that before?

Source: wiktionary