Marine Fluorescence

Great Barrier Reef invertebrates showing natural fluorescent glow. Narrow-spectrum fluorescence is produced with a set of optical filters.

A hard coral (Stylophora sp.) narrow-spectrum fluorescence. This image is available in 3d. Side-by-side stereo image for those who are comfortable with eye-crossing.
Hard coral (Acropora sp.) narrow-spectrum fluorescence. The image is a depth of field stack.

Tiny mantis shrimp telson and uropods fluorescence. Possibly Gonodactylaceus falcatus.
A polychaete showing its brightly fluorescing setae

Pocillopora sp.) emitting green fluorescence. It is possibly sick. The lower part of the coral has more red colors as the symbiotic algae didn't leave the polyps. The top part, however, shows signs of disease that are invisible without fluorescence. The green patterns might be natural, though.
A healthy hard coral (possibly Stylophora sp.) fluorescence. Unlike some other Pocillopora corals in this gallery, this specimen is perfectly healthy and has no green patches or signs of simbiont loss.

Hard coral (Stylophora sp.) fluorescence. The image is a focus stack.This image is available in 3d. Side-by-side stereo image for those who are comfortable with eye-crossing. Other formats coming soon.
Unknown hard coral fluorescence.

Without fluorescence these two corals look very similar to a person who is not experienced in coral identification. With a fluorescence filter kit the difference is striking.
Hard coral (Fungia sp.) fluorescence.