Metal detecting is a hobby that combines the thrill of exploration with the potential for fascinating discoveries. Whether you're combing the beach, diving into oceans, or searching around a shipwreck, having the right equipment is crucial.

If you're planning to detect in areas like beaches, rivers, or lakes, having a waterproof detector can greatly improve your chances at finding treasure and not running in to any technical difficulties because your detector became wet. Keep in mind that there are waterproof detectors that can completely be submerged (all parts) and there are detectors where you can only submerge the coil.

Waterproof metal detectors are the perfect companions for these adventures, offering a variety of features to suit beginners and seasoned treasure hunters alike.

In this review, we'll dive into the world of the underwater metal detector, examining their features, technology, and what makes them stand out in a crowded market.

Waterproof Metal Detectors

The market offers an extensive selection of waterproof metal detectors from leading brands such as Garrett, Minelab, and XP, each with at least one model designed for submersion.

The best underwater metal detectors are tailored for deep-sea diving, highlighting the importance of understanding the distinctions between rainproof, water-resistant, weatherproof, and fully waterproof metal detectors.

Before purchasing, it is crucial to consult the manufacturer's specifications to ascertain the depth to which a detector can be submerged.

While some metal detectors are rated IP68 and can be submerged to moderate depths, typically around ten feet, others are engineered for scuba diving and can withstand much greater depths.

It's worth noting that a weatherproof or rainproof metal detector may not be suitable for submersion at all.

Additionally, the water resistance rating of the search coil is just as important as that of the detector itself and should be verified.

Beyond metal detectors, many manufacturers also provide a waterproof pinpointer, expanding the toolkit for enthusiasts and professionals alike.

Best Minelab Underwater Detector

Minelab Excalibur II Metal Detector

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Minelab Excalibur II Metal Detector

The Minelab Excalibur II stands out with its Broadband Spectrum (BBS) technology, paired with advanced ground rejecting capabilities, making it the quintessential device for underwater treasure hunting.

This underwater metal detector is designed to transition effortlessly between various environments—from dry land to the beach, wet sand, and even underwater depths reaching 200 feet (66m).

Its innovative ground cancelling technology ensures that saltwater environments won't cause false signals, enhancing your search with accurate discrimination and impressive sensitivity.

Whether you're a seasoned diver or a hobbyist beachcomber, the Excalibur II excels in locating treasures on the shore, wading in the shallows, or exploring sunken wrecks.

Key Features

Included Accessories with the Minelab Excalibur II:

  • NEW Koss Headphones (Hardwired)
  • Minelab 10" Coil Cover
  • Minelab Standard Lower Shaft
  • Minelab Short Dive Shaft
  • Minelab Rubbish Finds Pouch
  • 110V Wall Charger (Excalibur)
  • Recharge Adapter
  • NiMH Battery Pod Complete (Excalibur)

Features and Benefits:

  • BBS multi frequency technology (1.5kHz – 25.5kHz)
  • RCB amplifies weak target signals within the coil, reducing noise and enhancing detection of faint, deep objects
  • High visibility (Hi-Vis) fluorescent bodywork for increased underwater visibility
  • Slimline 8" coil designed for less weight and better balance
  • NiMH rechargeable battery pack, providing up to 12 hours of operation
  • Hi-Vis skid plate to protect the bottom of the detector
  • Side-mount shaft for shallow water and surf-wading (optional accessory)
  • Fully waterproof up to 200 feet (66 meters), suitable for diving

The Minelab Excalibur II is not just a tool but a reliable companion for anyone serious about underwater metal detecting, offering a combination of durability, precision, and ease of use.

Best Garrett Underwater Detector

Garrett Sea Hunter Mark II Metal Detector

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Garrett Sea Hunter Mark II Metal Detector

The Garrett Sea Hunter Mark II is a top choice among treasure divers globally, renowned for its exceptional capability to disregard the effects of saltwater.

This metal detector's versatile electronic housing can be conveniently mounted on the hip or positioned above, below, or under the cuff in both short and long configurations, catering to the user's comfort.

Included with the Garrett Sea Hunter Mark II:

  • 8" PROformance™ fully submersible search coil
  • Submersible headphones and headphone jack
  • Belt pouch for easy carrying

Highly Recommended for:

  • Surf hunting
  • Treasure diving

Also Recommended for:

  • Coin hunting
  • Jewelry hunting
  • Relic hunting
  • Cache hunting
  • Prospecting
  • Dry beach and freshwater hunting


For over three decades, the Pulse Induction (PI) technology of the Sea Hunter Mark II has been the gold standard in underwater detection.

The detector's unique Discrete Trash Elimination technology allows users to filter out most unwanted items like pull tabs and foil without compromising the sensitivity needed to detect rings and coins in discrete elimination mode.

Key Features

  • Circuit Type: Pulse Induction technology automatically neutralizes the effects of saltwater and ground mineralization.
  • Audio Threshold, Adjustable: Customize the audio to suit your preferences.
  • User-Adjustable Discrimination/Elimination: Tailor your search to ignore unwanted items.
  • Hip Mount Belt/Pouch: Reduces the weight of the detector during extended searches.
  • Discrimination Modes: Choose between standard or discrete modes for different levels of non-ferrous target discrimination.
  • Discrete Trash Elimination: Focus on valuable items by filtering out common trash without losing sensitivity for important finds.
  • Standard Trash Elimination: Achieve the deepest detection and sweep slowly in areas with minimal trash.
  • Independently Sealed Battery Compartment: Ensures the power source is protected from water ingress.
  • Search Mode: Non-motion all-metal Deepseeking mode with full-range PI discrimination for comprehensive searches.

The Garrett Sea Hunter Mark II is engineered for both the enthusiast and the seasoned diver, offering a robust set of unique features that enhance the treasure hunting experience.

Best Waterproof Metal Detector

Minelab CTX 3030 Waterproof Metal Detector

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Minelab CTX 3030 Waterproof Metal Detector

Experience unparalleled treasure hunting with the Minelab CTX 3030, the ultimate waterproof, all-terrain metal detector designed for peak performance.

Unearth historical artifacts with unprecedented precision thanks to the most accurate target identification technology available.

The detector's full-color LCD and sophisticated target trace discrimination ensure that you'll discover hidden treasures even in areas cluttered with junk and under various ground conditions.

Relish the convenience of wireless audio, complemented by the flexibility of both built-in speaker and headphone options.

Minelab's exclusive integrated GPS allows you to effortlessly navigate to your preferred treasure hunting spots and log your discoveries.

Moreover, you can synchronize your detecting adventures with Google Maps using the XChange 2 PC application, bringing your treasure tracking into the digital age.

The Minelab CTX 3030 metal detector package includes an array of essential items:

  • Minelab CTX 3030 Metal Detector with a lightweight carbon fiber shaft
  • 11" waterproof DD smart coil, complete with a protective coil cover/skidplate
  • USB cable for convenient data transfer
  • Coil hardware for secure assembly
  • Armrest strap for enhanced comfort
  • An additional battery pack to extend your search
  • Auto (car) charger for on-the-go power replenishment
  • Battery charging station for efficient energy management
  • Universal AC wall adapter for versatile charging options
  • Li-ion rechargeable battery for long-lasting use
  • Wireless headphone module for a clutter-free audio experience
  • Removable headphone module to suit your listening preferences
  • An easy-to-understand getting started guide to kick off your treasure hunting journey
  • UR-30 headphones, compatible with both standard and wireless setups
  • A comprehensive Getting Started Guide to ease you into your metal detecting adventures
  • 3 Year Limited Warranty for peace of mind

Embark on your treasure-seeking journey with confidence, equipped with the Minelab CTX 3030 and its comprehensive suite of tools designed to enhance your metal detecting experience.

Best Waterproof Nokta Scuba Detector

Nokta Makro PulseDive Scuba Detector

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Nokta Makro PulseDive Scuba Detector Convertible to Pointer (2-in-1 Set) Waterproof up to 200 ft!

Available Colors: Black or Yellow

Why Choose PulseDive? Get the convenience of a scuba detector and pointer in one comprehensive package!

Package Includes:

  • Hard-Shell Carrying Case
  • Scuba Coil
  • Pointer Coil
  • Scuba Coil Cover
  • Replaceable Hard-Shell Pointer Case (Yellow)
  • Battery Cover (for land use)
  • Belt Holster
  • Security Lanyard
  • USB Charging Cable
  • Dust Protection Cap
  • Battery
  • Built-in wireless module compatible with the optional 2.4GHz Wireless Green Edition Headphones


The PulseDive 2-in-1 Set is an indispensable tool for any diving enthusiast, from the professional to the holiday snorkeler, as well as land-based treasure hunters. This versatile set is poised to be an exceptional addition to your equipment collection this year.

Key Features and Specifications

  • Versatility: Designed for both underwater and on-land metal detecting.
  • Wireless Convenience: Includes a built-in wireless module for use with separately sold 2.4GHz Wireless Green Edition Headphones.
  • Durability: Comes with a sturdy hard-shell carrying case and additional protective components for various components.
  • Ease of Use: The set is equipped with a belt holster and security lanyard for secure and convenient handling.

The Pulse of Technology: Pulse Induction Explained

Pulse induction technology is at the heart of many high-end waterproof metal detectors. Unlike traditional Very Low Frequency VLF metal detectors, pulse induction (PI) detectors send powerful waves into the ground to detect metal objects.

This makes them particularly effective in mineralized environments like saltwater beaches, where they can penetrate deeper and offer a wider range.

The Minelab Excalibur II, for example, is renowned for its pulse induction technology, providing exceptional depth and sensitivity in saltwater conditions.

Waterproof Metal Detectors

The Sound of Success: Wireless Headphones

Wireless headphones are a game-changer in metal detecting. They free you from the tangle of cords and allow you to move more freely. Many waterproof metal detectors now come with this feature, enhancing the overall experience.

Price Point: Investing in Quality

Price is a significant factor when considering the purchase of a waterproof metal detector. While there are budget-friendly options available, investing in quality often means a higher price tag.

However, the initial investment can lead to better finds and a more enjoyable detecting experience. The Minelab CTX 3030, although on the pricier side, offers advanced features and unparalleled accuracy, making it a worthy investment for serious enthusiasts.

The Beachcomber's Companion: Specialized Beach Detectors

Beach metal detecting is a popular pastime, and having a detector that's specifically designed for this environment can make a world of difference.

Waterproof metal detectors like the Garrett Sea Hunter Mark II are tailored for beachcombing, offering features like sand-resistant seals and specialized search modes to handle the unique challenges of beach detecting.

A Spectrum of Choices: Variety in the Market

The market offers a wide variety of waterproof metal detectors, each with its own set of features and capabilities.

From the all-terrain versatility of the Minelab CTX 3030 to the specialized underwater performance of the Nokta Makro PulseDive, there's a detector to suit every need and preference.

This variety ensures that whether you're a beginner or a seasoned pro, you'll find the perfect detector for your treasure-hunting adventures.

Some Final Thoughts

Waterproof metal detectors are essential tools for anyone interested in metal detecting in wet environments.

From pulse induction technology to wireless headphones, these devices are packed with features that enhance the search for hidden treasures.

Durability, price, and reliability are key considerations when choosing a detector, and the market offers a range of options to suit every level of expertise and every type of treasure hunting.

Whether you're beachcombing, diving, or simply enjoying the variety of metal detecting, there's a waterproof metal detector out there that's perfect for you.

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FAQ Section

Q: Can waterproof metal detectors be used on land as well? A: Absolutely! Most waterproof metal detectors are designed to be versatile and can be used on both land and in water. Models like the Minelab Equinox 800 are equally effective on dry land as they are in wet conditions.

Q: How deep can underwater metal detectors go? A: The depth capability varies by model. Some detectors, like the Garrett ATX, are rated for depths of up to 10 feet or more, while others may be suitable for shallow water searches only. Always check the manufacturer's specifications for depth ratings.

Q: Are waterproof metal detectors difficult to maintain? A: Maintenance is relatively straightforward. After each use, it's important to rinse the detector with fresh water, especially if it's been used in saltwater, to prevent corrosion. Regular checks for any damage to the seals and proper storage will also prolong the life of your detector.

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