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Some creatures underwater have the ability to absorb light and re-emitted at a longer wavelength.

Using a yellow filter scuba divers can observe this awesome aspect of nature. The filter can be attached to a divers mask. Underwater photographers and videographers will also need to add a yellow filter to their camera lens to capture the light spectrums.

These underwater photography were taken during night dives in the Red Sea, off the coast of Egypt.

Here are more details about my camera set-up and approach to capturing fluorescent images during night dives.
So interesting facts!
This is so cool! Thank you for sharing.