Pacific sleeper sharks, also known as Greenland sharks, are commonly seen in the waters around Alaska and have been known to grow up to 14 feet in length. If a sleeper shark has managed to survive in Lake Iliamna, Wright says it would have an abundance of fish to feed on and no natural predators.

[,,,] Wright says the sleeper sharks have "proven themselves to be very adaptable" and may become the Arctic's top predator due to the effects of global climate change. The sleeper sharks tradition...
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