March 18, 2011
Flower Garden Banks, Gulf of Mexico
Photograph by David Doubilet, National Geographic
This Month in Photo of the Day: National Geographic Magazine Features
In the Flower Garden Banks National Marine Sanctuary in the Gulf of Mexico, steel pillars supporting a gas platform make a vertical reef encrusted with tube sponges.
See more photographs from the February 2010 feature story "Relics to Reefs."
Buy a print of this photo