Can fish make their own suncream?

Even in the depths of the ocean, fish can be exposed to sunlight. A recent study found that certain types of fish can create their own endogenous sunlight protection compounds to shield them from sunlight in the water. Sea urchin and some birds also display this incredible skill. Zebrafish (shown above) produce a compound called gadusol that provides SPF. Scientists hope the discovery will aid the development of new organic sunscreens for human use.

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