Crystal River- 3 Sisters Spring, Underwater Pumkin Carving October 19, 2008July 17, 2026James Garrett Dive Time– 23min Breathing Gas– 32% Max Depth– 12ft Visibility– 100ft+ Water Temp– 72(F.) Notes: Just a pumkin carving dive. The boat ride is beautiful, as is the walk from the river to the actual spring.