Check out this neat video from National Geographic's emerging explorer, David Gruber (a marine biologist at the City University of New York) in which he discusses coming across what he claims is the first observation of biofluorescence in a sea turtle:
Video source:
YouTube
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Thursday morning was the Biofluorescence morning, with lectures by the three most recent Nobelists who received their prize for the discovery and first uses of the Green Fluorescent Protein (GFP) and its derivatives that glow in other colors.