What Makes the Garrett Sea Hunter Special?
The Garrett Sea Hunter stands out as one of the most reliable pulse induction metal detectors for beach and underwater treasure hunting. Unlike VLF detectors that struggle in saltwater, the Sea Hunter uses pulse induction technology that ignores mineralization and saltwater interference completely.
This detector operates at a frequency of 750 pulses per second, making it highly sensitive to all metal targets while maintaining stability in challenging environments. The Sea Hunter can be used on land, in shallow water up to 200 feet deep, and even submerged when properly equipped with the submersible headphones.
Key Features and Specifications
The Sea Hunter comes packed with features specifically designed for serious beach hunters:
– **Pulse Induction Technology**: Completely eliminates saltwater interference
– **Target Identification**: Four-segment visual and three-tone audio ID system
– **Depth Indicator**: Shows approximate target depth on a scale of 0-8 inches
– **Waterproof Design**: Fully submersible up to 200 feet with proper accessories
– **Discrimination Modes**: Full discrimination and 2-Tone mode for better target separation
– **Adjustable Sensitivity**: Eight levels to fine-tune performance
– **Battery Life**: Up to 75 hours on a single 9V battery
The control box is water-resistant but not fully waterproof, so you’ll need the optional submersible housing for underwater use. The search coil is fully submersible and comes in two sizes – 10″ x 14″ for general use and 8″ for tight spaces.
Getting Started with Your Sea Hunter
Initial Setup and Assembly
Setting up your Garrett Sea Hunter is straightforward. The detector comes partially assembled with the lower stem and search coil connected. You’ll need to attach the upper stem and control box, then connect the coil cable.
For beach hunting, I recommend using the 10″ x 14″ search coil as it provides better ground coverage and depth. The 8″ coil is better suited for trashy areas or tight spaces between rocks.
Understanding the Control Panel
The Sea Hunter’s control panel is intuitive once you understand the basic functions:
– **Power/Volume**: Turns the detector on and adjusts audio volume
– **Discrimination**: Cycles through discrimination modes
– **Sensitivity**: Adjusts detection depth and stability
– **Ground Balance**: Eliminates false signals from mineralization
– **Threshold**: Sets the background hum level
Start with the sensitivity set to 5 and adjust higher if you’re not getting interference. The threshold should be set just loud enough to hear a faint hum when no targets are present.
Mastering Beach Hunting Techniques
Reading the Beach Environment
Successful beach hunting requires understanding how tides, currents, and weather affect where targets accumulate. The best hunting spots are often:
– **Cut Banks**: Where waves have eroded the sand, exposing older layers
– **Tide Lines**: Areas where high tide leaves debris
– **Around Structures**: Near jetties, piers, and rock formations
– **Wet Sand Zones**: Especially after storms when targets are closer to the surface
I’ve found that hunting the “wet zone” – the area between the high tide line and where waves break – yields the best results. This area is consistently replenished with new targets and is easier to dig in than dry sand.
Effective Search Patterns
Developing a systematic search pattern ensures you cover the entire area thoroughly. The most effective patterns include:
– **Grid Pattern**: Walk parallel lines about 3 feet apart
– **Spiral Pattern**: Start at the water’s edge and work in expanding circles
– **Perimeter Search**: Follow the contour of the beach, working from high to low ground
For the Sea Hunter specifically, I recommend overlapping your sweeps by about 6 inches. The detector’s field extends beyond the coil edges, but overlapping ensures complete coverage.
Discrimination and Target Identification
Understanding Discrimination Modes
The Sea Hunter offers two main discrimination modes:
**Full Discrimination Mode**: Eliminates most iron targets while accepting non-ferrous metals. This is great for beaches with lots of trash, but you might miss some good targets masked by iron.
**2-Tone Mode**: Provides better target separation with a low tone for iron and high tone for non-iron targets. This mode helps you distinguish between good targets and trash more effectively.
I typically start in Full Discrimination mode to avoid digging too much trash, then switch to 2-Tone mode when I want to be more selective about what I dig.
Interpreting Audio Signals
The Sea Hunter’s three-tone audio system provides valuable information about targets:
– **Low Tone**: Iron and steel targets
– **Medium Tone**: Small or deep non-ferrous targets
– **High Tone**: Larger, shallow non-ferrous targets
Pay attention to signal consistency. A good target will produce a solid, repeatable signal when you sweep over it from different directions. If the signal disappears or changes dramatically, it’s likely trash or a false signal.
Underwater Hunting with the Sea Hunter
Equipment Needed for Submersion
For underwater use, you’ll need the optional submersible housing for the control box and submersible headphones. The search coil and lower stem are already waterproof, but the control box needs protection.
I recommend the Garrett Submersible Headphones designed specifically for the Sea Hunter. They provide excellent audio quality underwater and are comfortable for extended use.
Underwater Hunting Techniques
Underwater hunting requires some adjustments to your technique:
– **Slow Down Your Sweep Speed**: Water resistance makes fast sweeping difficult and less effective
– **Use a Smaller Coil**: The 8″ coil is easier to maneuver underwater
– **Watch Your Buoyancy**: Salt water makes you more buoyant, affecting your stability
– **Mark Your Finds**: Use a float or line to mark where you’ve detected targets
The best underwater hunting is typically in shallow water (1-3 feet deep) where you can still see the bottom clearly. This depth range often produces jewelry and coins that have been recently lost.
Maintenance and Care
Cleaning After Saltwater Use
Saltwater is corrosive and can damage your detector if not properly cleaned. After each beach session:
1. Rinse the entire detector with fresh water
2. Pay special attention to the search coil and stem connections
3. Dry thoroughly with a soft cloth
4. Store in a cool, dry place
For the control box, wipe it down with a damp cloth rather than submerging it in water. The connections between the stem sections should be periodically cleaned and lubricated with silicone spray.
Battery Care and Replacement
The Sea Hunter uses a single 9V battery that typically lasts 50-75 hours. To maximize battery life:
– Turn off the detector when not in use
– Remove the battery if storing for extended periods
– Use high-quality alkaline batteries rather than rechargeable ones
When the battery gets low, you’ll notice reduced sensitivity and depth. Replace it promptly to maintain optimal performance.
Comparing the Sea Hunter to Other Detectors
Sea Hunter vs. Sea Hunter Mark II
The Sea Hunter Mark II is the updated version with several improvements:
– Better discrimination capabilities
– Enhanced audio response
– More stable operation in highly mineralized soil
– Updated control panel layout
The original Sea Hunter is still a capable detector and can often be found at lower prices on the used market. The Mark II is worth the extra cost if you plan on serious beach hunting.
Sea Hunter vs. Other PI Detectors
Compared to other pulse induction detectors like the Minelab Excalibur or Fisher CZ-21, the Sea Hunter offers:
– Better value for money
– Excellent saltwater performance
– Simpler operation for beginners
– Less depth than high-end PI detectors
The Sea Hunter is an excellent entry-level PI detector that performs exceptionally well in its intended environment without the complexity or cost of top-tier models.
Common Issues and Troubleshooting
False Signals and Interference
If you’re experiencing false signals, try these solutions:
– Reduce sensitivity settings
– Check for loose connections
– Ensure the search coil is securely attached
– Move away from power lines or other electromagnetic sources
Sometimes false signals are caused by highly mineralized soil or black sand. In these cases, ground balancing can help, but you may need to accept some chatter and rely more on audio signals.
Audio Issues
If you’re not getting audio signals:
– Check the volume control
– Ensure headphones are properly connected
– Replace the battery
– Check for water damage in the control box
For underwater use, make sure you’re using submersible headphones. Standard headphones will be damaged by water exposure.
Accessories and Upgrades
Recommended Accessories
Several accessories can enhance your Sea Hunter experience:
– **Garrett Camo Digger’s Pouch**: For collecting finds
– **Lesche Digging Tool**: High-quality sand scoop for beach hunting
– **Waterproof Headphones**: Essential for underwater use
– **Padded Arm Strap**: Increases comfort during long sessions
I also recommend getting a good quality sand scoop with small holes that won’t let small targets fall through. The longer handle makes retrieving targets much easier.
Optional Upgrades
While the Sea Hunter performs well out of the box, some users opt for upgrades:
– **Larger Search Coil**: Increases ground coverage and depth
– **Hip Mount System**: Reduces arm fatigue by redistributing weight
– **Pinpointer**: Helps locate targets precisely once detected
The hip mount system is particularly useful for long beach hunting sessions, as it shifts the weight from your arm to your hip.
Real User Experiences
Success Stories
Many users report finding valuable items with their Sea Hunter. One user found a gold ring worth $3,000 on their third beach hunt. Another recovered a lost wedding ring for a beachgoer, earning a $500 reward.
The detector’s reliability in saltwater conditions makes it particularly popular among beach hunters who hunt regularly. Users consistently praise its ability to ignore saltwater interference while still detecting small gold jewelry.
Common Criticisms
Some users find the Sea Hunter’s lack of visual target ID limiting compared to VLF detectors. The all-metal mode can also be noisy in trashy areas, requiring patience and good technique.
The weight of the detector (about 5 pounds) can cause fatigue during long hunting sessions, which is why many experienced users invest in the hip mount system.
Conclusion
The Garrett Sea Hunter remains one of the best pulse induction metal detectors for beach and shallow water hunting. Its ability to ignore saltwater interference while maintaining excellent sensitivity to small targets makes it a favorite among serious beach hunters.
While it may not have all the bells and whistles of more expensive models, the Sea Hunter delivers reliable performance in its intended environment. With proper technique and regular maintenance, it can provide years of successful treasure hunting adventures.
Whether you’re a beginner looking to get into beach hunting or an experienced detectorist needing a reliable saltwater machine, the Sea Hunter offers excellent value and performance that’s hard to beat in its price range.