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This 2013 photo provided by the Monterey Bay Aquarium Research Institute shows a manipulator arm on Monterey Bay Aquarium Research Institute's remotely operated vehicle collecting a Cladorhiza caillieti sponge growing on a piece of carbonate crust on the seafloor off the coast of Southern California. Researchers at MBARI say they have discovered a new species of poisonous sponge, described as a twig-like carnivore that is able to survive on the dark, frigid ocean floor, just northwest of La Jolla, U-T San Diego reported. (AP Photo/Monterey Bay Aquarium Research Institute)

This 2013 photo provided by the Monterey Bay Aquarium Research Institute shows a manipulator arm on Monterey Bay Aquarium Research Institute's remotely operated vehicle collecting a Cladorhiza caillieti sponge growing on a piece of carbonate crust on the seafloor off the coast of Southern California. Researchers at MBARI say they have discovered a new species of poisonous sponge, described as a twig-like carnivore that is able to survive on the dark, frigid ocean floor, just northwest of La Jolla, U-T San Diego reported. (AP Photo/Monterey Bay Aquarium Research Institute)

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