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Like many Keys corals, this one has no new growth

By Communications and Publishing 2017 (approx.)
A coral worn smooth by erosion
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Detailed Description

A modern coral reef in Dry Tortugas National Park. There is little living coral and high rates of bioerosion. Photo taken under research permit number DRTO-2018-SCI-0005. Credit: Lauren Toth, USGS

Sources/Usage

Public Domain.