BIG FISH, LITTLE fish, cardboard box is how the dance goes.

It’s also how this capture goes by researchers at the University of Delaware’s Ocean Exploration, Remote Sensing, Biogeography (ORB) Lab.

They caught the smaller shark, the dogfish, on their hook by accident when out collecting data from bigger sharks known as sand tiger sharks.

The dogfish was about 3ft long and was completely swallowed by the sand tiger shark, one of the biggest predators in the sea.

The sand tiger shark was released alive after researchers gave it a small ID tag, while the dogfish sadly met its end.

A similar thing happened a week later when a pregnant 300lb sandbar shark ate a 3ft dogfish right off the hook.

She was very close to giving birth to between six and 12 pups, and researchers say the dogfish was a “weird pregnancy craving” for the sandbar shark.

(Both images ORB Lab/Facebook)

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