When blue marlin are around Key Largo
Blue marlin fishing out of Key Largo is an offshore game, and the local operator lists the area as marlin. For port context, start with the Key Largo page.
This page covers the offshore listing for marlin, four named reefs and wrecks with depths in ft, the local charter that lists blue marlin, and where the rules live.
Timing depends on the fish and the water, not the dock. The blue marlin guide covers seasonality and biology, and the Atlantic Southeast blue marlin guide (see also the wider Atlantic Southeast guide) covers the regional picture.
Where boats run offshore from Key Largo

The operator lists the area as offshore, for marlin, without naming a ground or a distance. The named structure near the port is reef and wreck water.
The four sites below sit at 110 to 135 ft, which is reef and wreck depth and a different habitat from the open blue water where pelagic fish roam. The reef list comes from FWC’s Florida Keys artificial reefs.
| Site | Type | Depth (ft) |
|---|---|---|
| Duane | Artificial reef wreck | 118 |
| Spiegel Grove | Artificial reef wreck | 135 |
| Alva Chapman Reef | Artificial reef | 118 |
| Eagle | FWC Florida Keys artificial reef | 110 |
Use the Chart Contours layer to read the bottom and the OBS SST and Chlorophyll layers to read the water offshore. The chart layers are not for navigation.
Duane
The Duane is an artificial reef wreck in 118 ft.
Spiegel Grove
The Spiegel Grove is an artificial reef wreck in 135 ft, the deepest of the four.
Alva Chapman Reef
Alva Chapman Reef is an artificial reef in 118 ft, the same depth as the Duane.
Eagle
The Eagle is an FWC Florida Keys artificial reef in 110 ft, the shallowest of the four.
How blue marlin are fished from Key Largo
Boats troll offshore, since the operator lists the area as offshore for marlin.
Before you run, pull the official marine forecast from the Florida Keys marine conditions page. Check wind in knots, wave height in ft, and period in seconds, and weigh those numbers against your boat and your crew.
For spread, baits, tackle, and technique, use the blue marlin guide.
Who fishes for blue marlin out of Key Largo
The local charter that lists blue marlin is Key Largo Fishing Adventures. A day aboard shows an owner-operator how a local crew runs offshore. For the wider picture, see the billfish guides.
FAQ: blue marlin out of Key Largo
How far offshore do boats run?
Blue marlin fishing out of Key Largo is listed as offshore. The operator gives no ground or distance.
Do the Spiegel Grove and Duane hold blue marlin?
The Spiegel Grove is an artificial reef wreck in 135 ft, and the Duane is an artificial reef wreck in 118 ft. Both are in reef and wreck depth.
Who runs blue marlin trips from Key Largo?
Key Largo Fishing Adventures lists blue marlin.
Where are the rules?
FWC sets the state rules. Read the Florida regulations page and the federal Atlantic billfish rules, and check both before you fish.








