You're probably familiar with the infamous Thanksgiving "turducken," in which a chicken is stuffed inside a duck, which is stuffed inside a turkey. Well, suffice it to say that a new brand of turducken won't be coming to a Thanksgiving near you anytime soon ... but it's no less fascinating.

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Scientists tagging sharks off the coast of Delaware are dubbing their latest discovery the "Turducken of the Sea." If you're wondering what that means, you're not alone. Scientists describe it as an instance where a shark is swallowed by another shark.

Danielle Haulsee was among the University of Delaware PhD students of oceanography using bait fish to lure in sand tiger sharks off of Delaware. She says the tagging was part of research she and her team were conducting to learn more about the species' movements and general population.

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They got more than they bargained for, however, when a dogfish shark surfaced by their boat with its mouth closed on their fishing lure. Once they reeled it in and opened its jaws, they got the surprise of a lifetime.

"It wasn't until we went to get the hook out of its mouth that we realized it had an entire other shark inside!" Haulsee told Fox News' Jon Scott.

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