They sure do
The sun's rays do penetrate water, but each color penetrates to a different extent. The more energetic colors penetrate deeper, while the longer wavelengths peter out at shallower depths.
Red light is absorbed within 15 to 20 feet, while blue light will make it down as far as 200 feet or more, depending on the clarity and turbidity of the water.
Violet light rays lose their punch quicker than blue rays, so if this trend continues, ultraviolet light might not penetrate as far. If ultraviolet light is responsible for tanning, then the tanning depth would be shallower.
Snorklers near the surface need to practice caution, as they are prone to burn. Wear a t-shirt or dive skin, or wear waterproof sunblock.
First answer by anonymous. Last edit by Schnazola. Contributor trust: 1126 [recommend contributor]. Question popularity: 189 [recommend question]
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