Sand, Stone, and Sea Life at Dry Tortugas

The national park west of mainland Florida includes a smattering of islands, but the vast majority of the park’s acreage lies underwater.

This image originally appeared in the NASA Earth Observatory story Sand, Stone, and Sea Life at Dry Tortugas.

NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey. Story by Kathryn Hansen.

Published April 26, 2025
Data acquired March 20, 2025