The phrase "killer shark" refers to a dangerous shark that has the ability or tendency to attack and potentially harm or kill humans or other animals. Full definition
Bait 3D is an Australian trashy genre piece about killer sharks preying on people trapped in a supermarket after a tsunami. (dailymail.co.uk)
If you're unfamiliar, a Sharknado is a bizarre weather phenomenon that combines the deadly force of a tornado with a massive amount of killer sharks. (businessinsider.com)
In the wake of Benchley's novel, we quickly got such memorable chum as Megalodon (oil rig explosion unleashes giant shark), Carcharodan (prehistoric shark freed when iceberg melts), Extinct (killer shark preys on boys in Mississippi River) and Meg (really big pregnant shark bubbles up from Marianas Trench and eats dumb tourists.) (killzoneblog.com)