All you need to know about underwater metal detectors

If you want to take your treasure hunting to the next level, try underwater metal detecting. With these waterproof beauties, you can unleash your inner treasure hunter and start chasing the thrill of looking for treasure underwater.

But can metal detectors detect underwater? In today’s guide, we will try to cover all you need to know about underwater metal detectors so that when pursuing underwater metal detecting as a hobby, you will know all the risks and requirements involved before you begin.

With underwater metal detectors, finding hidden riches becomes a true adventure. If you go with a pulse or low-frequency detector, you’ll have a great time and might even discover something new.

Knowing about underwater metal detectors is important if you’re considering digging for metal. These detectors are not your average; instead, they are made specifically to meet the demands of underwater research. Prepare to go deeper and find hidden riches with these specially designed detectors.

They are designed to safeguard all parts of the detector, including the control box and any used headphones.

So let’s get started and find out what these underwater metal detectors are:

What are underwater metal detectors?

Most of the time, your adventures might take you to places in the water where you can hunt for precious metals.

To achieve this, we use devices called waterproof metal detectors that can withstand water. Underwater metal detectors work well, even if most aren’t waterproof.

It’s crucial to have a clear understanding of where and how you’ll use your new metal detector before investing in a waterproof one.

Different Types of Waterproofing

The waterproofing capabilities of metal detectors may vary from one another. The device’s model and technology help detectorists find treasures hidden in underwater layers.¬†

There are different types of waterproofing that a device may come with.

  • Splash-resistant devices can handle some water exposure during metal detection without being damaged.
  • Certain devices have a waterproof coil, but make sure to keep the control unit dry for metal detection.
  • Weatherproof devices can handle rain and splashes of water while hunting on the beach.
  • Underwater metal detectors are devices that can be fully submerged in water and remain waterproof. One example of such a device is IP68, which can give you reliable results within water up to a few meters.

Before using your device in water, make sure to check the manufacturer’s claim on waterproofing.

Why are Underwater Metal Detectors Used?

Although it might come as a shock, some metal detectors can be used underwater. Submersible metal detectors work underwater, even if most aren’t watertight.

It’s crucial to have a clear understanding of where and how you’ll use your new metal detector before investing in a waterproof one.

 In this article, we will discuss a select selection of possible reasons for finding in the water.

  • A ship crash may leave some metallic valuables in the water that you can retrieve with your underwater metal detector.
  • You might find evidence of lost civilizations underwater with your waterproof device.
  • The lost treasure by pirates can also be hunted with the help of underwater metal detectors.
  • People living near water bodies, both in the past and present, might have lost their valuables that you can find with your device.

Check out some of the best metal detectors underwater available on the market, which are not only waterproof but they also perform exceptionally well. 

Is It Worth Purchasing an Underwater Metal Detector?

If you want to find underwater treasure, you need a metal detector that works underwater and can detect metals deep down.

It is worth buying an underwater metal detector only if you are targeting water areas for your hunt. The reason for this statement is that these devices are highly expensive.

Therefore, for regular treasure hunting, you can consider other simple models of detectors.

Why are Underwater Metal Detectors Expensive?

Instead of buying an underwater metal detector, most people use any metal detector they can find. This is because these devices are quite expensive and not readily available in the market.

The technology and operating parts of underwater metal detectors make them expensive.

Key Features of Underwater Metal Detectors

Lightweight Device

Before buying an underwater metal detector, choose a lightweight one. It’s because swinging it in the water needs more power than swinging it in the air.

Using lightweight devices can make them easier for beginners and experts to use.

Depth Potential

One consideration you should make when looking for a waterproof metal detector is how much depth the device truly offers.

The greater the depth it can reach, the higher the chances of detecting treasure underwater.

It is important to clear up your confusion regarding the depth potential of metal detectors. So, read How Deep Metal Detectors Can Detect?  

Also, check out the Metal Detector Depth Comparison Chart

Multiple Coil Options

Your device may come with multiple coil options that you can use as per your requirement while detecting metal underwater.

The search coil may vary in shape and size, and the detection level will be affected by the use of various search coils.

Economical Device Options

Always consider a cost-effective underwater metal detector when investing in treasure hunting.

Most experts prefer using the same type of device for all types of detection to make their hunt the most economical.

Therefore, we recommend going for less expensive metal detectors.

Other Features

Underwater metal detectors may also come with other key features to facilitate users in their hunting process. Some accessories for underwater use are a pinpointer, headphones, vibration, and a built-in LED backlight.

If you have any confusion regarding Pinpointer read What is a Pinpointer for Metal Detecting?


There’s nothing more exciting than finding gold using an underwater metal detector. It’s a little-known truth that there are more jewelry items and lost money buried underwater than in use.

Before starting your underwater treasure hunt, be sure to properly research the equipment and metal detector you will need to purchase as shoddy equipment will lead to frustrations and failure later on.

No matter your goal, using a metal detector for treasure hunting can be enjoyable, healthy, and calming. Now that you’re prepared, enjoy your new activity, and don’t forget the sunscreen!

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