About Revisions Coffins Patch Marathon, FL 33050 More Info Max Depth: 21-25ft/6-8m Average Viz: 31-35ft/9-11m Entry Type: Boat Bottom Composition: Sand/Rock Aquatic Life: Might See Something Summer: 81-85°F/27-29°C Winter: 66-70°F/19-21°C 2/14/2013 8:10 AM LatitudeAdjustment

COFFINS PATCH is the name given to an area comprised of several reefs about four miles south southeast of Key Colony Beach. The name was reportedly derived from a vessel that sank there that was carrying a cargo of coffins. Happily, no evidence of the ship or its cargo is in existence today. All the reefs in this area support healthy fish populations and because most of them are unmarked, they are not heavily dived. They each have maximum depths of about 25 feet and a minimum depth of 7 feet.

Wiki http://en.wikipedia.org/wiki/Coffins_Patch_(reef)

Map http://floridakeys.noaa.gov/zones/spas/coffins_map.html