red light is not so much disturbing animals as white light.
But i am sure, they can see both!
Thats the same myth like red is not seen below 5m...
You will find same coralls or algae that have a bright red colour without an external light source....
Its hard to try to fix that on a picture, with or without strobe, but its existing.
Another thing is, that some marine fish have signs you can only see with infra red sources.
Specially differents between male and female.....
That makes only sense, if they can see in that specifc range of light.
Regards,
Wolfgang
Red light sensitive cells in the eye and red pixels on sensors use pigments that detect a wide range of "red" wavelengths. Red at the long end of the range, and certainly infrared, does get absorbed very quickly and is virtually gone after a few meters. The reason that you can still detect red at greater depth is that light at the shorter end of the red wavelength range penetrates much deeper. Whether fish can see artificial red light depends on whether their eye pigment absorption spectrum overlaps the emittance spectrum of the dive light. The answer will likely differ for different fish and light sources.
Bart
From 'fisheye' to fish eye.
The eyes of most fish species are not so much different from the human eye. Their retina contains rods and cones, thus the ability to perceive visual details, colours as well as changes in brightness. Unlike humans, fish normally adjust focus by moving their lens closer to or further from the retina. Different fish species have developed special visual abilities to survive in their specific habitats. Fish that live at greater depths have adapted to darkness by developing a greater sensitivity to light and changes in brightness. Coral fishes have developed special colour, stripe and movement patterns as camouflage to trick other species (who lack the ability to detect, or are fooled by their visual tricks).
So fishes may not differ so much in visual abilities from the UW Photographer There is even an example of a tiger shark in the Bahamas that stole a camera and appeared to have taken several pictures of her environment after recovery of the camera (-;
