ナショナルジオグラフィックのインスタグラム(natgeo) - 3月17日 06時09分

Photo by @BrianSkerry.

A Green Sea Turtle swims among a school Surgeonfish in the Southern Line Islands, located in the Central Pacific. Because of their remoteness, these islands and the waters surrounding them remain largely unspoiled, and diving the reefs here is like traveling back in time.

Researchers studying coral ecosystems have discovered that a pristine reef has a biomass that is comprised largely of predators, including sharks, snapper and groupers. Sadly, many reef systems around the world today do not have these animals, as they have been fished to dangerously low levels. Every animal plays a vital role in the health of an ecosystem and when individual species are removed, the entire environment breaks down. A healthy ocean is needed for a vibrant planet.

Photographed on assignment for @ナショナルジオグラフィック Magazine.
To see more underwater photography, and to learn more about oceanic conservation efforts, be sure to follow me on Instagram, @BrianSkerry.
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