Garrett Sea Hunter: Your Ultimate Underwater Metal Detecting Companion
The Garrett Sea Hunter is a pulse induction metal detector that has earned its reputation as one of the most reliable underwater detectors on the market. Whether you’re searching for lost jewelry on a crowded beach or exploring shipwreck sites in saltwater, this detector delivers exceptional performance where many others fail.
Why Choose a Pulse Induction Detector for Underwater Use
Before diving into the Sea Hunter’s specifics, it’s worth understanding why pulse induction technology matters for underwater detecting. Unlike VLF (very low frequency) detectors, PI units like the Sea Hunter aren’t affected by saltwater mineralization or black sand. This means you can search in conditions that would drive other detectors crazy with false signals.
The Sea Hunter operates at a 2-foot search coil depth and can function at depths up to 200 feet when properly assembled. This makes it versatile for everything from shallow surf hunting to deep-water scuba detecting.
Key Features That Set the Sea Hunter Apart
Fully Submersible Design
The Sea Hunter is built from the ground up for underwater use. Every component, from the control housing to the search coil, is waterproof. The detector comes with a special waterproof headphone set that allows you to hear targets clearly even in rough surf conditions.
Adjustable Discrimination
One of the Sea Hunter’s standout features is its adjustable discrimination control. You can choose between three settings:
– All-metal mode for maximum depth and sensitivity
– Jewelry mode to filter out most iron targets
– Custom mode where you can fine-tune discrimination levels
This flexibility means you can adapt to different hunting environments without changing detectors.
Target ID Capabilities
While not as sophisticated as some land-based VLF detectors, the Sea Hunter does offer basic target identification through its audio tones. Different metals produce distinct sounds, helping you decide whether to dig or move on. The detector also features a built-in meter that provides visual feedback on target strength.
Getting Started with Your Sea Hunter
Assembly and Setup
Setting up your Sea Hunter is straightforward. The detector comes in several pieces that connect easily. The control housing attaches to the lower stem, which then connects to the upper stem and handle. The search coil plugs into the lower stem with a waterproof connector.
Before your first hunt, you’ll want to:
– Install fresh batteries (the Sea Hunter uses 8 AA batteries)
– Attach the waterproof headphones
– Adjust the stem length for your height
– Balance the detector for neutral buoyancy if diving
Ground Balancing for Different Environments
While the Sea Hunter doesn’t require traditional ground balancing like VLF detectors, you should still adjust your settings based on the environment. In saltwater, you might need to increase discrimination slightly to handle the high mineral content. In freshwater lakes or rivers, you can typically run with lower discrimination for better depth.
Hunting Techniques for Different Environments
Beach Hunting
The Sea Hunter excels at beach hunting, particularly in the surf zone where other detectors struggle. The key is to work methodically:
Start at the water line and work your way down the beach in overlapping patterns. The surf creates a natural concentration of lost items, so focus on areas where people swim and play. Pay special attention to troughs and cuts in the sand where items settle.
Saltwater Surf Tips:
– Keep the search coil as close to the sand as possible
– Use a smaller sweep speed to maintain control in waves
– Consider using a sand scoop designed for water hunting
– Hunt during low tide for access to freshly uncovered areas
Shallow Water Hunting
For water depths up to chest-high, the Sea Hunter’s standard configuration works well. You can wade out and search areas that beach hunters can’t reach. Focus on drop-offs, sandbars, and areas around piers or jetties where people gather.
Deep Water Diving
When diving with the Sea Hunter, proper buoyancy becomes crucial. The detector can be negatively buoyant, making it tiring to hold. Consider adding floatation to the upper stem or using a harness system. The detector’s 200-foot depth rating means you can explore beyond what most recreational divers attempt.
Maintenance and Care
Post-Hunt Cleaning
After each use, especially in saltwater, rinse the entire detector with fresh water. Pay special attention to:
– The search coil connection
– The battery compartment seal
– The headphone jack
– Any threaded connections
Battery Considerations
The Sea Hunter is power-hungry, especially when used at depth. Always carry spare batteries, and consider using high-quality alkaline or lithium batteries for longer life. Remove batteries between hunts to prevent corrosion.
Storage Tips
Store your Sea Hunter in a cool, dry place. Avoid leaving it in direct sunlight or extreme temperatures. If storing for extended periods, remove batteries and clean all components thoroughly.
Common Issues and Troubleshooting
False Signals in Surf
If you’re getting constant false signals in the surf, try these solutions:
– Increase discrimination slightly
– Slow your sweep speed
– Ensure the search coil is fully submerged
– Check for interference from nearby electronics
Audio Problems
If the audio cuts out or becomes distorted:
– Check headphone connections
– Verify batteries have sufficient charge
– Ensure the control housing is properly sealed
– Test with different headphones if available
Depth Issues
If you’re not getting the depth you expect:
– Verify you’re in an appropriate mode (all-metal for maximum depth)
– Check battery voltage
– Ensure the search coil is properly connected
– Consider environmental factors like heavy mineralization
Comparing the Sea Hunter to Other Options
Sea Hunter vs. AT Pro
The AT Pro is another popular underwater detector from Garrett, but it uses VLF technology. While the AT Pro offers more target ID features and can be used on land and water, the Sea Hunter outperforms it in saltwater and provides better depth in challenging conditions.
Sea Hunter vs. Other PI Detectors
Compared to other pulse induction detectors in its price range, the Sea Hunter offers excellent value. It may not have all the bells and whistles of high-end PI units, but it delivers reliable performance at a more accessible price point.
Accessories Worth Considering
Search Coils
While the standard 8-inch coil works well for most situations, consider these options:
– A larger 10×12 inch coil for covering more ground quickly
– A smaller 4-inch coil for tight spaces and increased sensitivity to small targets
Harness Systems
For extended water hunting sessions, a good harness system can make a huge difference in comfort. Look for models designed specifically for water use that won’t retain water or chafe.
Recovery Tools
Invest in quality recovery tools designed for water hunting:
– A sturdy sand scoop with drainage holes
– A floating finds pouch
– A waterproof pinpointer for precise target location
Real-World Performance
Users consistently report that the Sea Hunter delivers on its promises. In field tests, it routinely detects coins and jewelry at depths of 12-15 inches in wet sand, outperforming many VLF detectors in the same conditions. The audio target ID is reliable enough to distinguish between different types of metal, though it requires practice to master.
The detector’s weight (about 5.5 pounds with batteries) is manageable for most users, though it can feel heavy after several hours of hunting. The balance is good, and the controls are logically placed for easy access even when wearing gloves.
Who Should Buy the Sea Hunter?
The Garrett Sea Hunter is ideal for:
– Beach hunters who frequently encounter saltwater conditions
– Divers looking for a dedicated underwater detector
– Relic hunters searching in highly mineralized soil
– Anyone frustrated with VLF detectors in challenging environments
It’s less suitable for:
– Hunters who primarily search on dry land
– Those needing advanced target ID capabilities
– Users on a very tight budget (though it offers good value)
Final Thoughts
The Garrett Sea Hunter remains a solid choice for underwater metal detecting after all these years. Its pulse induction technology, durable construction, and reliable performance make it a tool you can count on in challenging conditions. While it may not have all the features of newer models, it does what it was designed to do very well.
If you’re serious about water hunting or frequently encounter saltwater and mineralization, the Sea Hunter deserves serious consideration. With proper care and technique, it can provide years of successful hunting and help you recover targets that other detectors would miss entirely.
Remember that like any tool, the Sea Hunter is only as effective as the person using it. Take time to learn its nuances, practice in different conditions, and you’ll be rewarded with finds that others leave behind.