Thumper Bluewater Expeditions

Thumper Bluewater Expeditions operates out of Golfito and offers extended offshore overnight trips to Costa Rica’s Seamounts and Hannibal Bank, Panama.They specialize in fishing for Billfish with light tackle, either on the fly or by using bait and switch with spinning or stand up conventional tackle.

Fishing aboard a luxurious 60 foot Mikelson walkaround Sportfish, they can cater for up to six anglers in air conditioned comfort. The boat features three double state rooms, private bathrooms with hot water showers, and a full kitchen and bar. With a huge livewell and tuna tubes as well as all the IGFA tackle you need to target Marlin on the fly and with conventional tackle, you will be in the best possible hands as you target the king of the Billfish.

The border area between Costa Rica and Panama is one of only two places in the world where three tectonic plates meet, creating a ridge rising 2500 ft from the bottom of the sea to just 500 ft below the surface. This creates surges of nutrients that rise from the bottom of the sea and attract Bonito, Yellowfins and, hot on their tails, the Marlin. Thumper Bluewater Expeditions target this species specifically, often catching Sailfish, Tuna and Mahi Mahi as a by-catch (and, in the case of the latter two, a tasty dinner). At night they use underwater lights to fish for Swordfish, Thresher Sharks and Squid. The beauty of multiday trips in the area is that when they find Marlins they can stick to them and start a new day in a proven location.

With an expert, English speaking crew that includes Capt. Abraham Conception, world champion of Marlin on the fly and Capt. Harry Glah, who has competed in two IGFA World Championship events, you will be fishing with the very best in the sport. Their record of 17 Marlins (two Blacks and 15 Blues) in one day speaks for itself. Come to the end of the world and fish with the Pros!

Select date to see available trips and rates:

  • Private trip
    Five Day Expedition- Hannibal Bank
      FREE Cancellation 60 days notice
    5 days trip, starts at 7:00 AM
    Overnight stay, liveaboard
    up to 6 persons / day
    The Hannibal Bank is known as the 'Jurassic Park' of sportfishing. A unique protrusion of the continental shelf gives rise to an enormous upwelling, bringing rich plankton biomass from 1000 meters deep to just 40 meters below the surface. This attracts fish from miles around and is one of the most likely places to catch a Grander, a 1000lb plus Marlin. This luxury 5 day excursion gives you the ultimate Marlin fishing experience as well as introducing you to the stunning ecosystem of Coiba National Park.
  • Private trip
    Three Day Expedition- CR Seamounts
      FREE Cancellation 60 days notice
    3 days trip, starts at 7:00 AM
    Overnight stay, liveaboard
    up to 6 persons / day
    Target Marlin with fly, spinning or stand up conventional tackle. Travel up to 80 miles offshore to fish with some of the best Marlin anglers in the business in unique Marlin fishing grounds. Add $600 per day for fly fishing under the expert supervision of the world champion of Marlin on the fly, Capt. Abraham Conception.
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About this listing

Targeted Species

Dolphin (Mahi Mahi)
Marlin (Black)
Marlin (Blue)
Marlin (Striped)

Shark (Thresher)
Tuna (Yellowfin)

Boat Specs

Mikelson Sportfish (Offshore sport fishing) originally built in 2006. Powered by 2 820HP MAN 10 cyc. diesel engines, with a maximum cruising speed of 24 knots.

60 ft
6 persons

Types of Fishing

Offshore Fishing

Fishing Techniques

Light Tackle
Heavy Tackle
Fly Fishing


Air Conditioning
Life Jackets
Snorkeling Equipment
Live Bait Well
Multimedia System
Tuna Tubes
Air Conditioning
Life Jackets

Trip Includes

Rods, reels & tackle
Live Bait
Catch cleaning & filleting
First Mate
Fishing License Included
Fly Fishing Equipment


FREE Cancellation
You can cancel or reschedule your booking up to 60 days before the trip. If the captain cannot run the trip due to unsafe weather conditions, your booking can be moved to another date or canceled free of charge.
Pickup agreed upon reservation
Transfer to/from departure site may be available and included in price depending on your location and distance from the dock.
Child Friendly
Catch and Release Mandatory


Book with 10% deposit
When the captain confirms your trip, FishingBooker charges your credit card a 10% deposit to guarantee your reservation.
Pay remaining balance to captain
The remaining balance is to be paid directly to the charter operator on or prior to your trip date in one of the following payment methods:
American Express
Bank Transfer

About the Captain

Harry Glah
Golfito, Puntarenas, Costa Rica
Member since December 2015
Captain Harry Glah owns and operates Thumper Bluewater Expeditions. He is an experienced professional angler who has spent a large part of his life honing his skills in the canyons of the Atlantic East Coast. He was declared champion of the 2002 Ocean City Tuna Tournament and has participated in two IGFA Offshore World Championship events. He has been based out of Costa Rica since 2006 and specializes in fishing for Billfish with light tackle.
Response time: within an hour
Response rate: 100%