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Related: Watch bright red blood-sucking parasite feast on gulper eel in rare, deep-sea footage Macrourus are commonly known as grenadiers or rattails because of their large heads and slender tails ...

Watching the deep sea can often feel like sci-fi. But a recent video from the ocean’s depths has stunned even seasoned scientists — showing two parasites firmly attached to a fish’s head ...

When it was pulled from the mud along a creek they realized it was from a sea monster known as a mosasaur and the size of it shocked them. "This is a true, true sea monster," said James Starnes ...