There is an old record (1800's) of bioluminescence by an endolithic bivalve, but I do not recall whether this has been verified.
In addition to the more normal approach of body bioluminescence (due in at least some cases to symbiotic bacteria), I believe at least one deepsea cephalopod has bioluminescent ink, presumably confusing to predators.
Fluorescent patterns are quite common. Often fossils will still show a color pattern under UV light despite looking plain white or brown in ordinary light.
Dr. David Campbell
Old Seashells
University of Alabama
Biodiversity & Systematics
Dept. Biological Sciences
Box 870345
Tuscaloosa, AL 35487-0345 USA
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That is Uncle Joe, taken in the masonic regalia of a Grand Exalted Periwinkle of the Mystic Order of Whelks-P.G. Wodehouse, Romance at Droitgate Spa