Something a bit unusual.
Caption from YouTube,
“Coast Guard Cutter Maria Bray crew members deploy concrete reef balls and old navigation anchors, July 18, 2018, off the coast of northeast Florida. The Maria Bray crew assisted in the deployment of reef balls, built by Mandarin High School students, and old navigation anchors for Think It, Sink It, Reef It, or TISIRI in order to create an underwater reef habitat. (U.S. Coast Guard photo by Petty Officer 3rd Class Ryan Dickinson)”
Thanks to Lee for bringing this to my attention.