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A team of researchers led by scientists from the American Museum of Natural History has found that catsharks are not only able to see the bright green biofluorescence they produce, but that they increase contrast of their glowing pattern when deep under water. The study, conducted with a custom-built “shark-eye” camera that simulates how the shark sees under water, shows that fluorescence makes catsharks more visible to neighbors of the same species at the depths where they live and may aid in communication between one another.
Image credit: ©AMNH/J. Sparks, D. Gruber and V. Pieribone
