10 Best Salt Water Metal Detector 2025 in the United States

The GreenRex Metal Detector is designed for both professional and beginner users, making it versatile in various environments, including beaches and underwater locations. Its operating frequency and advanced DSP chip enhance its accuracy, and the ground balance feature allows it to adapt to different terrains, which is essential for salt-water metal detection.

The IP68 waterproof rating means the coil can be submerged, though the control box cannot, limiting its full underwater capabilities. The 10-inch coil size is substantial, allowing for larger scans and efficient searching over a wide area. The large, backlit LCD screen ensures visibility in low light, and the ergonomic design makes it comfortable to use for extended periods. However, at 6.16 pounds, it may be slightly heavy for some users, though the adjustable length and arm support help mitigate this.

The included accessories like headphones, a foldable shovel, and a carrying bag add value and convenience, making it travel-ready and suitable for various outdoor activities. It offers robust features and settings like discrimination and pinpoint modes, which enhance detection accuracy by filtering out unwanted metals and providing precise location information. However, the fact that the control box is not waterproof could be a drawback for deep-water searches. In conclusion, the GreenRex Metal Detector is well-suited for beach and shallow water use, offering high accuracy and ease of use, but may not be ideal for extensive underwater exploration due to the non-waterproof control box.

The MINELAB Equinox 900 Multi-Frequency Metal Detector is a versatile tool for salt-water metal detecting. One of its standout features is its multi-frequency technology, allowing operation at six different frequencies, which enhances its ability to detect various types of metals in different conditions. It's fully waterproof and submersible up to 16 feet, making it ideal for underwater searches at beaches or riverbanks. The EQX 15 Double-D Waterproof Smart Coil is particularly useful for covering large areas efficiently.

Ground balance options and discrimination modes, like Park, Field, Beach, and Gold, help customize searches according to specific environments or targets, providing accurate target identification with up to 119 high-resolution IDs. The built-in flashlight and handgrip vibration are thoughtful additions for low-light conditions and improved usability. Ergonomically, its lightweight design (2.8 lbs) and collapsible structure make it easy to carry and handle, reducing fatigue during prolonged use.

However, the operating frequency is fixed at 5 KHz, which may not be as effective for certain metal types compared to higher frequencies. Despite this minor drawback, the MINELAB Equinox 900 is a strong choice for hobbyists looking for a reliable and flexible metal detector for salt-water environments.

The MINELAB MANTICORE is a standout choice for anyone looking to explore the world of salt-water metal detecting. Its Multi-IQ+ technology delivers impressive performance, offering 50% more power than many traditional models. This feature is particularly beneficial in challenging environments like beaches where multiple frequencies can help detect various types of metals effectively. The advanced target ID system enhances the user experience, providing visual and audio feedback that aids in distinguishing valuable targets from junk, making it easier for treasure hunters to find what they’re looking for.

One of the key highlights of this detector is its waterproof capability, rated at IP68, allowing it to be submerged up to 16 feet. This makes it ideal for surf and seawater detecting, ensuring users can confidently search without worrying about water damage. With 10 different search modes, it accommodates a range of terrains, from sandy beaches to inland areas, which adds versatility to its usability.

The MANTICORE is also designed with user comfort in mind; it’s lightweight at just 7.1 pounds and features an adjustable length, making it easy to carry and use for extended periods. Customizable audio controls and backlit features ensure that you can detect in various lighting conditions, adding to its practicality. Potential buyers should consider a couple of drawbacks. While the advanced features make it powerful, they may also present a learning curve for beginners. If you’re new to metal detecting, it might take some time to fully understand all the options and settings. Additionally, while it’s lightweight, some users may still find it cumbersome during long hunts.

The MINELAB MANTICORE is a robust metal detector catering to both seasoned treasure hunters and those willing to invest time to learn its features, particularly in salt-water environments. Its strengths in power, waterproofing, and ease of use make it a worthy option, though those new to the hobby might need to dedicate some time to master its advanced functions.