The Thunderbolt Wreck

Marathon's quintessential wreck dive, the Thunderbolt artificial reef lies upright in 115 feet of water offering 45 feet of relief. The 188 foot vessel, once used for studying lightning, was placed off Marathon by local dive operators in 1985. Sitting upright in 85 feet of water, there is a permanent marker buoy affixed to her.

Photographers will want to investigate the huge twin propellers and descend into the engine compartment beneath large arches in the main deck. A group of large barracudas can usually be found guarding the bow.