Piranha (2010)

Lake Victoria's annual Spring party by 50,000 young revelers is about to turn into a feeding frenzy with prehistoric hunger-pains. With knee-trembler's above the waves and tremors below, released from their dormant sleep, thousands upon thousands of flesh-eating nippers are released into the lake with whetted appetites and razor-sharp teeth. With a motley crew of strangers thrown together to defend these shores, it is now up to them to prevent the largest eat-out in human, and piranha, history.