Tony Wu / Humpback whale (Megaptera novaeangliae australis) resting head down in water with fluke above the water. Peeling sking on the fluke likely due to normal sloughing off of skin but it may be sunburn fro...

Tony Wu / Humpback whale (Megaptera novaeangliae australis) close up of skin shed from fluke, possibly due to normal sloughing of skin or sunburn. Vava'u, Tonga. Pacific Ocean.

Terry Whittaker / Bottlenose dolphin (Tursiops truncatus) female 'Spritie' with sunburn after stranding, Moray Firth, Highlands, Scotland. August.

Philippe Clement / Exposed beech trees (Fagus sylvatica) tree trunks wrapped in burlap / jute as protection for bark against sunburn and frost, Belgium. August

Philippe Clement / Exposed beech tree (Fagus sylvatica) trunk wrapped in burlap / jute as protection for bark against sunburn and frost, Belgium. August

Philippe Clement / Row of exposed beech trees (Fagus sylvatica) tree trunks wrapped in burlap / jute as protection for bark against sunburn and frost, Belgium. August

Nigel Cattlin / Lemon trees with fruit under shade netting to prevent sunburn on the Bay of Salerno near Amalfi in Italy.

Nigel Cattlin / Lemon groves with fruit on the Bay of Salerno near Amalfi in Italy. Some trees are netted to prevent over exposure to the sun and sunburn.

Nigel Cattlin / Lemon groves with fruit on the Bay of Salerno near Amalfi in Italy. Some trees are netted to prevent over exposure to the sun and sunburn.