Saint-Martin · Saint-Martin Coast
MAHI MAHI FISHING
IN GRAND CASE
Grand Case is an outstanding destination for mahi mahi fishing, with peak season in January, February, March and good catches in June, July, August. Book a charter and target mahi mahi with local experts.
About Mahi Mahi Fishing in Grand Case
Also called Dolphin or Dorado. Stunningly beautiful and acrobatic. Excellent eating.
Mahi Mahi — also called Dolphin or Dorado — are the most brilliantly colored fish in the ocean. Their iridescent body shimmers with electric blues, greens, and golds that literally change before your eyes. Males (called "bulls") develop a prominent flat forehead, while females ("cows") have a more rounded head profile. These fast-growing pelagic fish are found in blue water near floating debris, weed lines, and current edges. They are acrobatic fighters that tailwalk across the surface and make spectacular aerial leaps.
Scientific name: Coryphaena hippurus
Mahi Mahi Seasonal Calendar — Grand Case
Month-by-month availability for mahi mahi in Grand Case, MF.
How to Catch Mahi Mahi in Grand Case
Techniques & Bait
Trolling ballyhoo rigged with colorful duster/lure combinations along weed lines, current edges, and near floating debris is the classic technique. Once a school is located, stop the boat and pitch live pilchards, cut ballyhoo, or small live baits to the school — mahi travel in groups and multiple hookups are common. Casting light jigs, spoons, or fly-rod streamers to fish visible near floating objects is incredibly exciting. Keep one fish in the water next to the boat to hold the school in place while catching others.
Recommended Tackle
Medium spinning or conventional rod (6'6"-7 ft), 4000-5000 reel, 20-30 lb braid, 30-40 lb fluorocarbon leader. For trolling: 20-30 lb class conventional rigs. Mahi have sandpaper-like mouths — fluorocarbon leader works fine (no wire needed).
Best Deep Sea Fishing Fishing Spots in Grand Case
Top spots where local captains target mahi mahi and other deep sea fishing species.
Northeast Drop-Off
The shelf edge northeast of Grand Case drops into deep Atlantic water where blue marlin, wahoo, and mahi-mahi concentrate along the depth transition. The drop-off is accessible within a 30-minute run from Grand Case and produces bluewater action from April through November.
St. Barths Channel
The deep channel between Saint-Martin and St. Barths funnels Atlantic currents through a productive zone for wahoo, yellowfin tuna, and sailfish. Temperature breaks and current edges in the channel mark the most productive trolling lanes for offshore charters.
North Atlantic FADs
Fish Aggregating Devices deployed in deep Atlantic water north of Saint-Martin attract mahi-mahi, wahoo, and blackfin tuna to floating structure. The FADs provide reliable offshore action for Grand Case charter boats during the summer pelagic season.
Tintamarre Canyon
A submarine canyon northeast of Tintamarre Island creates upwelling that aggregates baitfish and attracts blue marlin, wahoo, and large yellowfin tuna. The canyon's proximity to Grand Case makes it a favored destination for experienced offshore charter captains.
Other Species in Grand Case
More fish you can target while visiting Grand Case.
Mahi Mahi Fishing in Grand Case — FAQ
The peak months for Mahi Mahi fishing in Grand Case are January, February, March, April, May, December. During these months, Mahi Mahi are most active and abundant in the Grand Case area.
Mahi Mahi fishing charters in Grand Case are typically deep sea fishing trips. Prices vary by trip duration and group size. Most charters include all gear, bait, licenses, and fish cleaning.
Trolling ballyhoo rigged with colorful duster/lure combinations along weed lines, current edges, and near floating debris is the classic technique. Once a school is located, stop the boat and pitch live pilchards, cut ballyhoo, or small live baits to the school — mahi travel in groups and multiple hookups are common. Casting light jigs, spoons, or fly-rod streamers to fish visible near floating objects is incredibly exciting. Keep one fish in the water next to the boat to hold the school in place while catching others.
No — when you book a charter in Grand Case, your captain provides all required Saint-Martin fishing licenses as part of the trip.
Mahi Mahi regulations in Saint-Martin include minimum size limits and bag limits that vary by season. Your captain will know the current regulations and ensure compliance.
While targeting Mahi Mahi in Grand Case, you may also catch Yellowfin Tuna, Caribbean Red Snapper, Blue Marlin, Amberjack, Wahoo. Many charter trips target multiple species for the best action.
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