Pacific lamprey: The jawless fish that survived 4 mass extinctions and sucks prey dry of blood and body fluids

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As a substitute of a jaw, lampreys have a sucker mouth that they use to latch onto prey.  (Picture credit score: Marli Miller/UCG/Common Photographs Group through Getty Photographs)

Title: Pacific lamprey (Entosphenus tridentatus)

The place it lives: Freshwater and marine ecosystems within the North Pacific, from California to Alaska, and throughout the Bering Sea to Russia and Japan