This is a picture of a shark eating another shark. That is all.S

You are looking into the jaws of a shark — inside the jaws of another shark.

It was just going to be another day of shark monitoring for the researchers at the University of Delaware's ORB LAB. Among other tasks, the group keeps track of shark populations in the ocean, catching and releasing the large predators. And this time, they caught two for the price of one. Write the researchers on their Facebook page:

We caught one large female on our first line Friday, but we were not expecting to catch her like this! This unlucky smooth dogfish couldn't resist the menhaden used as bait and unfortunately fell victim to one of the top predators in the bay. The dogfish was about 3 feet long and completely swallowed by the sand tiger shark.

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