United States · Marathon, Florida Keys

Thunderbolt

Best time to dive

January to December; June to August

What you might see

  • BarracudaLikely

Sightings are seasonal probabilities, not promises - even in peak season nature does its own thing.

Certification & difficulty

Advanced Open Water - advanced conditions (currents/depth); dive within your training.

Snorkelling

Not a snorkel site - no - too deep for snorkeling; scuba boat dive only

Safety notes

Depth (~30-37m) carries real risk of nitrogen narcosis and short no-decompression bottom times; interior/penetration diving adds overhead-environment hazards (silt-out, entanglement) and requires proper training, lights, reels, and redundant air per wreck-diving guides; occasional light current

Permits & fees

No fee - FKNMS mooring buoys are free and first-come, first-served sanctuary-wide; no specific wreck-diving permit/fee found

Permits and operators change - confirm before booking.

Location

Nearest hub: Marathon

This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.