ナショナルジオグラフィックのインスタグラム(natgeo) - 5月5日 03時37分

Photo by @BrianSkerry.
A pair of Unicorn Fish swim together at dusk along a deep drop-off in the waters off of Millennium Atoll, in the Southern Line Islands. Scientists on a National Geographic expedition to these remote Islands discovered a predator-heavy biomass in the reef ecosystems, with a coral cover of up to 100% in most locations.
Though currently healthy, the ecosystem must maintain every living creature as a means of surviving. Herbivores like these surgeonfish graze on algae, keeping it from overgrowing the coral. Like a finely-made watch, each piece of the ecosystem works in harmony with all other components. When certain species are removed, the entire system breaks down.

To see more underwater photography, and to learn more about my adventures around the globe, follow me, @BrianSkerry, on Instagram!

#southernlineislands #southern #line #islands #pristene #seas #national #geographic #underwater #photography #reef #coral #coralreef #photooftheday #protect #preserve #conserve #unicornfish #unicorn

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• BrianSkerry