20 Best Underwater & Waterproof Metal detectors

The best underwater waterproof metal detectors allow you to continue your treasure hunt underwater and reach terrains that not every metal detector can reach.

So are you in the market for a device that can find valuable metals in freshwater or for beach hunting? Take your pick from our list of the best waterproof detectors.

There are a few things to note before you begin your search for a device that is suitable for your kind of treasure hunt.

Factors to consider when choosing an Underwater waterproof metal detector

Waterproofing: Well, you don’t say Holmes. If you are going to be doing extended periods of search underwater, your metal detector must have protection from any damage that water might cause. All the features and body parts should be well-protected and made from non-corrosive materials to prevent rust.

If you need a detector that hunts primarily on land but also to find valuable metals on shallow waters, you may not need an entirely waterproof device. With a waterproof search coil, your metal detector can find targets in shallow waters without being totally submerged.

The best underwater detectors have waterproof search coils but are also submersible to absolutely outstanding depths underwater. One example is the Fisher 1280-x that can go up to 250ft depth!

VLF or Pulse Induction Technology: Ideally, pulse induction technology is the best option for underwater detectors. Its operation allow it to work perfectly in salt water conditions. VLF, on the hand, will struggle with mineralization in salt water but it has good sensitivity to find targets in freshwater hunting.

You will find PI in the leading underwater detectors because it is ideal for both salt and freshwater detecting.

There are also universal factors that affect your choice of underwater detectors and they include

  • Experience level in detecting
  • Price
  • Waterproof accessories
  • Lighting

We’ve divided this list into detectors from all levels of metal detecting, the bargain they represent (great value for a low price), and the type of water they are adapted to find treasure. Let us begin.

Fisher CZ-21 Quick Silver Metal detector

Our Rating:
5/5

When it comes to underwater gold prospecting, coin, relic, and beach hunting, there are few metal detectors that can match the Fisher CZ-21 for depth, sensitivity and efficiency. It is also fantastic on land and this makes it a leading all-round detector in the world.  It features an all-weather target identification and leak-proof system that is suitable for both underwater and on-ground detecting. Its design can also withstand many terrains and weather when hunting for treasure. Patented electronics operating style of the Fisher CZ-21 notably helps it to deepseek treasure but the electronics helps to remove the destabilizing property of salt water. This metal detector features the operating frequency range (5-15kHz) to help it to diversify treasure hunting to different modes. Precise pinpointing system to find all types of metal at determined locations and depth in the soil. There are two search coil options for the CZ-21 in the 8” and 10” standard search coils for improve depth. All of the above features of the Fisher CZ-21 make it one of the best underwater detectors. Still, perhaps the most impressive ability of this bad boy is its submersible ability of up to 250ft underwater. Does it get any better than this?

Features

  • 3-tone Audio Target ID
  • 2-year warranty
  • Operating frequency (5-15kHz)
  • Manual ground balance
  • Salt water or freshwater
  • Precise pinpointing
Fisher CZ-21 Quick Silver Metal detector
Fisher CZ-21 Quick Silver Metal detector

Fisher 1280-x Metal detector

Our Rating:
5/5

This is the ultimate Deepseeking metal detector from one the most efficient brands of metal detectors in the world. Submersible up to 250ft underwater, the Fisher 1280-x will go to depths that few other metal detectors can ever reach. And despite its intense ability and performance, this metal detector features an automatic turn-on-and-go operation that is simple to use by anybody and suitable for fresh and salt water detecting. Its full-range trash rejection control is very useful in discriminating all kinds of trash and junk items in the ground and allows it to focus only on the valuable metals. This control, coupled with the patented quartz-crystal circuitry, utilizes high scanning to ignore even the tiniest pieces of trash. If you are planning on going for long hours of underwater detecting, you can rest assured the Fisher 1280 will deliver adequately; it has a remarkable battery life of up to 75 hours. It also comes with a 2-year warranty for customer satisfaction.

Features

  • Fully waterproof up to 250ft
  • Deepseeking feature
  • Full range trash rejection
  • 75 hours of battery life
  • 2-year warranty
  • Patented quartz-crystal circuitry
Fisher 1280-x Metal detector
Fisher 1280-x Metal detector

Whites Surfmaster PI Dual-field Metal detector

Our Rating:
5/5

The surfmaster maximizes pulse induction technology to give unrivaled sensitivity and depth. For treasure hunting in difficult beach grounds and soils with high mineralization, this metal detector is your guy. The pulse induction technology is comfortable for salt water, fresh water, or mineralized ground conditions. It is entirely waterproof, submersible up to 100ft, and comes with waterproof Piezo headphones. The enhanced sensitivity of the surf aster is suitable for gold prospecting and it has a 12” search coil for extra depth. Finally, the Quick target recovery and adjustable pulse delay help this beauty detect valuable targets in the soil. And it comes with 8 AA alkaline batteries that allows the metal detector to go extended time underwater for detecting.

Features

  • Enhanced sensitivity
  • Quick Target recovery
  • Completely waterproof
  • 8 AA batteries
  • All-metal operating mode
  • 12” search coil
  • Pulse-induction technology.
Whites Surfmaster PI Dual-field Metal detector
Whites Surfmaster PI Dual-field Metal detector

Minelab Equinox 600 Metal detector

Our Rating:
5/5

With underwater gold prospecting or coin hunting in mind, one of the most competent metal detectors to employ is the Equinox 600. The Equinox 600 is waterproof—fully submersible up to 10ft underwater (along with waterproof search coils to make detecting underwater an easy task). It has a simultaneous multi-frequency intelligence system for top-level performance and a couple of specialization in detecting. So, if you’re gold hunting or seeking for coins, you can adjust this beauty to suit your operation. Not to forget the fast Target ID that identifies all the metals you find underground and then discriminates the trash from precious discoveries. The access to all the remarkable features of this metal detector is effortlessly from simple buttons and a very user-friendly interface. Finally, the battery life of the Equinox 600, like its 800 model upgrade, will give over 30 hours of detecting to make it a truly energy efficient device.

Features

  • User-friendly interface
  • Lightweight
  • Waterproof
  • Six custom search profiles
  • Multi-frequency operating system
  • Target ID
Minelab Equinox 600 Metal detector
Minelab Equinox 600 Metal detector

White’s Surfmaster DF Metal detector

Our Rating:
5/5

Underwater diving and metal detecting just got a lot more fun with the Surfmaster DF detector. Part of a series of excellent underwater detectors from Whites’, the Surfmaster DF takes gold sensitivity to the highest level. It is completely waterproof and submersible to a depth up to 100ft. The adjustable pulse delay technology works in a unique way of reducing the noise from thrash Iron and metal junks in the ground; also underwater black sand, and this allows the detector to hear only the sound of valuable metals. With the near-neutral buoyancy of the search coil, the Surfmaster DF will stay underwater without sinking or floating away from you. Its pulse-induction technology targets metals to very impressive depths of mineralized grounds or saltwater.

Features

  • Completely waterproof
  • 12” dual-field coil
  • Adjustable pulse delay
  • Pulse induction technology
  • Near-neutral buoyancy
  • Gold sensitivity
White’s Surfmaster DF Metal detector
White’s Surfmaster DF Metal detector

Whites TDI Beachhunter

Our Rating:
5/5

Another favorite from our list of underwater metal detectors which includes a 12” dual-field search coil and NiMH rechargeable battery, is the TDI Beachhunter. The 12” dual-field coil gives great sensitivity to find elusive metal targets during underwater and land detecting. The pulse-induction technology of the beachhunter enables it brave through salt water and high mineralization grounds to complete the sole task it was created for—underwater treasure hunting. It is waterproof up to 25ft and comes with adjustable pulse delay; what this does is that it personalizes the sensitivity of the machine for whatever you are hunting. This makes the Beachhunter a multi-function machine that will conveniently seek out small gold nuggets, jewelry, coins at extreme depths. The dual-tone audio sound indicates different metal targets and this allows for flexibility when hunting.

Features

  • Waterproof up to 25ft
  • Adjustable pulse delay
  • 12” dual-field search coil
  • Chest and hip mount
  • NiMH rechargeable batteries
  • Waterproof headphones
Whites TDI Beachhunter
Whites TDI Beachhunter

Garrett Sea Hunter Mark II

Our Rating:
5/5

If you are looking for the perfect detector that will work in fresh or salt water; hard terrains and mineralized grounds, the Sea Hunter mark II is top of the pile. With a groundbreaking and latest technology patented discrete Trash elimination operation feature, the sea hunter curates metals like no other device can. One disadvantage of the traditional PI technology is its unwanted sensitivity to junk metals, but the discrete trash elimination helps the sea hunter avoid trash metals in favour of valuable metals in the ground. With submersible headphones and 8” PROformance submersible search coil, this metal detector is completely waterproof up to 200ft—one of the most impressive of any metal detector on this list. It has three search modes and a salt elimination mode during beach hunting. The search modes include Standard PI discriminate, Discrete PI discriminate, Non-motion all metals.

Features

  • 8” PROformance search coil
  • All metal Deepseeking mode
  • Waterproof headphones
  • Microprocessor controlled
  • Non-motion all metal
  • Discrete trash elimination
Garrett Sea Hunter Mark II

Minelab Excalibur II Metal detector

Our Rating:
5/5

The  Excalibur II is arguably the best underwater metal detector that money can buy. And like other metal detectors you will find around, it uses a multi frequency BBS technology and RCB technology. The BBS technology has operating frequencies from 1.5-25.5kHz that enables the Excalibur II to find more targets during hunting. What the multi frequency offers is hunting a wide range of treasures—from coins to relic artifacts to gold, etc, and all you need to do is simply adjust its operation to fit the type of treasure hunting you want to embark on. The Slimline 10” coil gives this detector a remarkable sensitivity and depth when finding targets under water and it is lighter than almost all the search coils in the industry—despite its reduced weight, it still maintains a very good balance and will not float away underwater. The RCB technology is used to amplify weak signals and reduce noise from trash metals around. Finally, the Excalibur II is submersible up to 200ft underwater which makes it by far one of the most efficient metal detectors for diving and for land use.

Features

  • High visibility fluorescent body
  • 17 frequencies
  • Automatic ground rejection
  • Rechargeable battery up to 12 hours
  • Completely waterproof
  • BBS and RCB technology
  • Slimline 10” search coil
Minelab Excalibur II Metal detector

Garrett AT Pro metal detector

Our Rating:
5/5

When you’re exploring the best entry-level underwater waterproof metal detectors for treasure hunting, you can quickly become overwhelmed from choice, but the Garrett AT pro stands out here and is the top choice for beginners and experts alike. It will work fully submerged underwater up to 10 feet. The massive 8.5” x 11” search coil improves its sensitivity to find valuable metals at great depths. And with its Iron Audio system, you can hear the Iron trash in the ground—sounds like a grunt—and altogether avoid them; it saves you a lot of time to be used chasing valuable treasure. This metal detector also boasts of advanced audio modes to indicate the depth of metals in the ground, their size, and conductivity (useful information to determine the type of metal it is). Electronic pinpointing and Fast break ground balance are also features of the AT pro that makes it a top detectors choice. The latter feature is useful in ground situations with high mineralization.

Features

  • Operating frequency of 15kHz
  • Iron discrimination system
  • 8.5” by 11” search coil
  • Waterproof—fully submersible up to 10ft underwater
  • 2-year warranty
  • A high-grade Iron audio system
Garrett AT Pro metal detector
Garrett AT Pro metal detector

Bounty Hunter Land Ranger Pro

Our Rating:
5/5

This is a very easy and simple-to-use metal detector that is custom made for underwater detecting. Unlike the technical operation of some detectors, the Land Ranger pro has the simplest operation: just power on and you are good to go. This makes it a great entry level metal detector. It comes with 7 preset modes for different levels, terrains, and environment. They include coins, artifacts, jewelry, 2 tones, 3 tones, 4 tones and all metal modes. Ground cancellation adjustment makes it suitable for the location it has been set upon and the advanced notch discrimination ignores junks to find treasure. The land ranger pro has a 7.79kHz operating frequency that works with either an 11” DD search coil or 8” concentric coil to give it remarkable depth and sensitivity during hunting.

Features

  • V-break Advanced Audio Target ID
  • 11” DD search coil or 8” concentric coil
  • 5-year warranty
  • 7.79kHz operating frequency
  • LCD screen for display
  • 7 preset operation mode
  • Simple to use
  • Ground cancellation
Bounty Hunter Land Ranger Pro
Bounty Hunter Land Ranger Pro

Tesoro Sand shark metal detector

Our Rating:
5/5

The Tesoro sand shark uses one of the most advanced pulse induction technology in the metal detecting industry. It is the first microprocessor controlled PI detector ever made. The Tesoro has two operating modes: VCO and normal. VCO operation indicates when a target is close to the search coil by generating a louder and high tone for pinpointing, while normal mode gives a single tone during prolonged search and for beach hunting. The sand shark can work with either an 8” or 10.5” spiral search coil and has a waterproof hard-wired headphone. Finally, the microprocessor is for customizing the detectors operation to suit your precise needs. And this bad boy is also submersible up to 200ft—which is an impressive depth for hunting; who knows what you will find.

Features

  • Waterproof up to 200ft
  • Hardwired headphones
  • 2 search coils
  • VCO and normal operation mode
  • Microprocessor controlled
  • 8 AA batteries
  • 2-year warranty
Tesoro Sand shark metal detector
Tesoro Sand shark metal detector

Garrett ATX metal detector

Our Rating:
5/5

The pulse technology of the ATX can locate the smallest coins, relics, and gold in the ground. Its extreme sensitivity makes it perfect for gold prospecting and other kinds of treasures hunting. The Garrett ATX is a detector that works on universal grounds: from highly mineralized to salt water, to fresh water detecting—it will produce excellent performance in whatever condition. A military-grade detector (which gives it a very compact and fearless look) the ATX is performance-enhanced and extremely durable. The new DD coil design is built for high sensitivity that is uniform across the ground. And like most top-level underwater detectors, the Garrett ATX is completely waterproof up to 10ft. The LED light is used to indicate the strength of the metal signals and it has motion and non-motion modes for customization of hunting to increase performance.

Features

  • Operating mode—All Metal and discriminate
  • AA rechargeable batteries
  • LED light
  • Advanced ground balance
  • Waterproof up to 10ft
  • Pulse-induction Technology
Garrett ATX metal detector

Minelab CTX 3030 waterproof

Our Rating:
5/5

Minelab has produced some really top-level underwater waterproof metal detectors over the years and this is one of the top picks. The CTX 3030 is waterproof and can work in tricky terrains. With an advanced target discrimination tech, it can distinguish the valuable metals from trash metals. In terms of the exclusive package, the CTX 3030 comes with a lot of extra gadgets like UR-30 headphones, rechargeable battery, armrest strap, two search coils, etc. How about high-grade technology? Trust Minelab always to deliver. This product uses GPS1, FBS2, Smartfind 2, and Wi-stream technology to record high sensitivity and signal processing. GPS1 is used to establish precise Geo-locations, FBS2 utilizes multi-frequency transmission and a coil-to-detector analysis to discover metal targets in the ground, Smartfind 2 processes the digital signal to project the image information of metals, and Wi-stream is a wireless audio network for identification and discrimination. Finally, it comes in nine unique languages: English, French, Spanish, Italian, German, Russian, Polish, Portuguese, and Turkish.

Features

  • Waterproof
  • FECO metal discrimination
  • Wireless audio
  • Full-color LCD
  • GPS-locating and PC mapping
  • Wi-stream, GPS1, SmartFind2 and FBS2 technology
Minelab CTX 3030 waterproof
Minelab CTX 3030 waterproof

Tesoro Tiger Shark Metal detector

Our Rating:
5/5

Discover the world of top-level underwater and land metal detecting with the Tesoro sand shark. It is waterproof up to 200ft—one of the most impressive depths of any metal detector. The Tesoro uses a microprocessor technology and that makes it multifunction detector for both land and underwater. Underwater, the Tiger shark is a leading model—designed for beach and freshwater treasure hunting. It comes with a full discrimination adjustment that curates through trash and junk metal to differentiate it from the valuable metals. The operating frequency of the Tiger shark is 12.5kHz and uses either an 8” or 10.5” hard-wired search coil, making it perfect for underwater relic and coin hunting. It has five operating modes which include No motion All metal (with a slow and fast tune), salt mode (for beach detecting), normal mode, and silent search motion discrimination. The waterproof headphone is also an underwater feature of the Tiger shark.

Features

  • Operating frequency of 12.5kHz
  • 10.5” or 8” hard-wired coil
  • Salt or freshwater
  • Waterproof headphones
  • 5 operation modes
  • Microprocessor technology
Tesoro Tiger Shark Metal detector
Tesoro Tiger Shark Metal detector

JW Fisher Pulse 8X

Our Rating:
5/5

Not all metal detectors can handle heavy duty operations and commercial use, but that is what makes Pulse 8X stand out among its peers. This metal detector is the choice of professionals in underwater detecting. It is also used by professional divers, by the military, government research, etc. While most metal detectors come with a search coil and cannot be replaced, the Pulse 8X has a waterproof search coil connector that enables it to work with any size and type of search coil. Thus, it can be upgraded significantly for optimum sensitivity and reach depth up to 200ft. The visual and audio target indicators are installed not only to indicate the signal strength of metals, but to sound audio alarms when a metal target is close. The sound alarm notification is loud enough for you to hear even without using the headphones. Finally, the most impressive thing about the Pulse 8X is its sensitivity —it is the most sensitive pulse detector on the planet. The near-buoyant design of the coil allow it to stay underwater without floating away.

Features

  • Corrosion-proof PVC handle for underwater
  • 2-year warranty
  • Depths of over 200ft
  • Near-buoyancy design
  • Visual and audio target indicator
  • Waterproof search coil connector
Fisher Gold Bug-2

Minelab SDC 2300 All-terrain Gold detector

Our Rating:
5/5

Another Minelab entry in the SDC 2300. And as the name suggests, this mid-range metal detector can survive any terrain it sets upon to its quest to find coins and gold; any terrain, including underwater. This metal detector is waterproof—fully submersible up to 3m underwater. On land, and now on the water, the SDC 2300s single goal is to lead you to your treasure. It utilizes a high-grade Multi-period fast (MPF) tech, which explores clear signals to detect small coins in the soil. The audio response feature gives pitch and tone discrimination signals when the search coil moves through metals or trash materials. The tone for a valuable or ferrous metal is different from non-ferrous metal. Similarly, the pitch and amplitude of the sound indicates the depth of prospective targets in the ground. Finally, its ability to brave tough terrains isn’t merely an advertisement for the SDC; the military-grade coupling of this bad boy lends a certain ruggedness to its carriage.

Features

  • MPT technology
  • Military-grade compact design
  • Waterproof
  • High sensitivity device
  • Advanced audio discrimination
  • Fast impulse induction
  • SDC Koss headphones and backpack
Minelab SDC 2300 All-terrain Gold detector
Minelab SDC 2300 All-terrain Gold detector

Garrett AT Gold Waterproof Metal Detector

Our Rating:
5/5

It would be hard to find a list of the best underwater metal detectors for gold, coins and relic hunting without the Garrett AT Gold firmly registered on it. This detector combines a truly advanced search coil and an operating frequency to give it high sensitivity and depth. And the Garrett AT doesn’t just come with a full package, including headphones, a Garrett Pro pointer, and batteries, it is fully waterproof up to 3m—which means it will function both underwater and on dry land. Its two discrimination mode allows the operator of this metal detector to distinguish between unwanted metal items (like rusty old metal, nails, etc.) and potentially valuable artifacts. With a high frequency of 18KHz, the Garrett AT Gold is custom-made to find elusive gold nuggets, coins and relics in various environments. Finally, with its 2-year warranty on products, you can feel relatively safe when choosing this metal detector for your treasure hunting.

Features

  • Includes Headphones, an AT pinpointer and batteries
  • Frequency of 18kHz and Audio tone ID
  • 2-year warranty
  • Ground balance window
  • Waterproof (to a depth of 3 meters)
  • DD search coil (5X8)
Garrett AT Gold Waterproof Metal Detector

Nokta Makro Simplex

Our Rating:
5/5

This is an entry-level metal detector that is simple and easy-to-use for underwater metal detecting. The simplex has an auto ground balancing and comes with built-in search modes which include All Metal, park, Field, and beach. It is waterproof-fully submersible up to 10ft underwater, and the operating frequency of 12kHz makes it a perfect device for coin hunting. The vibration of the simplex is its own creative way of showing that it has detected a target in a particular area. It has a very simple, adapted for easy and less complicated handling. Not to mention that the simplex is very lightweight at merely 2.9 pounds and, consequently, can be used for extended periods without getting tired from the load. For all its admirable qualities, this metal detector is probably most popular for its lightning. So, when it comes to night-time coin hunting, you know who you’re banking on. LCD backlight, a very bright LED flashlight, and keypad backlight maintain top-quality lighting for this beauty.

Features

  • Lightweight
  • 5-year warranty
  • 11" search coil
  • Operating frequency - 12kHz
  • Waterproof
  • Auto ground balance
Nokta Makro Simplex
Nokta Makro Simplex

Nokta Makro PulseDive Scuba detector

Our Rating:
5/5

For this range of underwater metal detector on our list, we are witnessing remarkable efficiency for a low price. We’re putting our money on this Scuba detector—yep, suitable for Scuba diving—to blow your mind. This IP68-rated waterproof device is submersible up to 200ft; makes it one of the best underwater metal detectors in the world. Pulse induction technology enables this beauty to dispel electrons in saltwater and to ignore soil with high ground mineralization. When metal targets are located, the PulseDive uses four efficient means of indication and they are: Audio only, vibration only, audio and Vibration, and LED indicator. It also features a powerful LED flashlight for good vision at night during detecting. For the dive mode, the PulseDive locks the keys of operation and every other part that can be punctured by water pressure at massive depths.

Features

  • Pulse induction
  • 1P68 waterproof device
  • Dive mode
  • LED and audio indicators
  • Waterproof up to 200ft
  • Four modes of indication
Nokta Makro PulseDive Scuba detector
Nokta Makro PulseDive Scuba detector

Quest Scuba Tector

Our Rating:
5/5

For less than $200, you’re getting the Quest Scuba Tector which is a performance oriented entry level metal detector capable of extensive hunting underwater and on land. The Scuba Tector follows the trend of many underwater detector by featuring a pulse-induction technology coupled with a 5×4” mono search coil for powerful sensitivity and to reach incredible depths. It is waterproof, submersible up to 200ft—tailor-made to locate coins, relics, gold, and jewelry that have been buried deep underwater. It is still a mystery how the Scuba Tector sells for its price despite having features that makes it one of the best underwater detectors around. For an entry level detector, you need something that is easy to operate and less complicated to handle; this is why the Scuba Tector uses a simple operation mechanism. With the click of a single button, you are ready for efficient treasure hunting. To switch to dive mode (the suitable mode for underwater deep hunting) all you need to do is to press two buttons for two seconds and this metal detector is ready to go.

Features

  • LED flashlight for night hunting
  • Two-buttons control and easy to use
  • Waterproof up to 200ft
  • Target locking function
  • Ergonomic body for comfort
  • Built-in LI poly battery
Quest Scuba Tector
Quest Scuba Tector

Conclusion

When setting out for underwater detecting, you will need the right device that is suitable for the condition in which you want to hunt. Not all metal detectors work underwater. However, if you are looking for waterproof detectors, there are numerous options out there.

Perhaps the options are even too many.

We’ve reviewed twenty of the best underwater waterproof detectors that you can choose from to begin your adventure.

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