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Nat Geo WILD gets up close with underwater killers lurking in our oceans. At first glance these underwater assassins may appear to be exotic beauties, but for those who allow curiosity to get the best of them, this risky pursuit may result in a brush with death. Meet the sharp-toothed barracudas and piranhas that slice through their targets with ease and scavenge on the remaining carcasses. Feast your eyes on the predators that have mastered the ways of their underwater Atlantis.