Blog about Underwater Life and Scuba Diving

When Scuba Diving Meets Metal Detecting, You Can Score Big!

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Scuba diving is a great way to experience the underwater world—you can explore shipwrecks or see coral of every color. There’s cave diving, deep sea and freshwater diving. And if you’re really adventurous, you may enjoy treasure hunting with a metal detector while you are submerged. Did you know that one lucky shipwreck dive could make you a millionaire?

Underwater Metal Detecting is gaining popularity and typically refers to the following three activities:

  • Snorkeling with a Metal Detector – treasure hunting while using a snorkel and a diving mask in salt or freshwater which is usually less than 6 feet deep. This type of underwater detecting does not require much equipment or physical strength.
  • Scuba Detecting – metal detecting in fresh or saltwater which is usually less than 20 feet deep while using a scuba gear.
  • Shipwreck Diving includes both treasure hunting in the area around a shipwreck and searching for valuable artifacts inside the sunken ships. Shipwreck diving can be done either in shallow water or in deep water down to 200 feet.

Divers can uncover all kinds of treasure, including shipwreck artifacts, old coins and much more. One post-colonial coin can sell for hundreds of dollars on eBay!

Which Underwater Metal Detector Should You Use?

Taking the time to research and select the best underwater metal detectors is important. Will you be hunting in fresh or salt water? If you will be hunting in salt water, a Pulse Induction detector will be your best choice.

Pulse Induction Metal Detectors transmit a series of quick electronic pulses in to the ground. These electronic currents are not affected by wet salt sand and ground minerals, but they are highly sensitive to precious metals. A Pulse detector is best for salt water beaches and diving.

Very Low Frequency Metal Detectors typically operate in the 3 to 30 kHz frequency range and are quite sensitive to coins, relics, and jewelry. VLF detectors have the capability of discriminating out junk targets while still accepting good items.

Ready to get in the water and find your own treasure? Underwater metal detectors and accessories are available from There is nothing more exciting than recovering treasure—a relic, jewelry or a shiny piece of gold!


About the author: Michael Bernzweig manages in Southborough, MA. He has written extensively on the subject of metal detecting since the mid 1980’s. He has traveled world-wide in his pursuit of educating, exploring and advising others in the proper use of metal detectors. Outside of the business he enjoys mentoring students, being involved in the community and spending time with his family.

Photo Caption (diver): Michael Bernzweig of recommends the Garrett Infinium for serious enthusiasts. It is suitable for snorkeling with a metal detector, scuba detecting and wreck diving.

Photo Caption (rings): Shallow water recoveries from underwater treasure hunting enthusiasts can include a wide range of jewelry and precious metals.

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