Who is the top predator of the deep ocean? Video reveals some surprises

Jellyfish and their kin are top predators in the deep ocean, alongside squid and big fish, finds a study published this week in the Proceedings of the Royal Society B. Researchers captured video footage of the Monterey Bay ecosystem off the coast of California over 27 years using remotely operated vehicles and recorded what animals ate or had just eaten. These direct observations took the guesswork out of who eats whom in the deep sea and revealed that the deep ocean food web is much more complex than previously thought, and that affects the seafood we eat, the researchers say.

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