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Diver with a Massive Starlet coral, Dry Tortugas National Park

May 2012 (approx.)

Detailed Description

A USGS diver beside a Massive Starlet (Siderastrea siderea) coral colony in Dry Tortugas National Park. Scientists used a core from this coral to reconstruct ocean temperatures going back to 1837. Photo: USGS, May 2012


Public Domain.