Linked from
The 20 pages that link to Photoprotection, each with the reason it gives.
CarotenoidRelated: Carotenoids protect photosynthetic machinery from excess absorbed energy.
Basal cell carcinomaRelated: Reducing UV exposure helps lower the risk of future tumors.
NeustonRelated: Surface exposure subjects neuston to intense sunlight and ultraviolet radiation.
MelasmaRelated: Long-term sun protection is central because light can reactivate pigmentation.