Worn on your wrist, ankle, or surf leash (POD) one Sharkbanz product will help reduce the risk of an unwanted shark encounter, as the deterrent field of a single Sharkbanz unit is approx. 1-2 meters (about 3-6 ft).

However, wearing two (2) Sharkbanz (one on your ankle; another on your opposite wrist) will increase the overall deterrent field size and thus provide greater coverage – similar to how other safety devices work. If only wearing one, we suggest wearing Sharkbanz on your ankle, as the majority of shark bites occur on the ankle and leg areas.

The FCS x Sharkbanz Pod is designed specifically for surfing and integrates seamlessly with any leash. While just as effective as our staple product, Sharkbanz 2, the FCS x Sharkbanz POD is offered at a more competitive price point because of its surf-specific usage. The POD’s features make it an excellent choice for surf enthusiasts who prioritize cost-effectiveness and discrete use of a shark deterrent while surfing.

Sharkbanz 2 offers a wider range of applications with its premium silicone band, allowing you to wear it on your ankle or wrist, extending usability to various water sports and activities beyond surfing. The versatility, added convenience, and material costs justify the higher price tag.

Don't worry, your Sharkbanz is not "leaking" or defective. Quite the opposite.

Sharkbanz' powerful magnetic technology will attract tiny ferritic (iron) particles commonly found in the ocean. You may observe these minute particles sticking to your Sharkbanz after an ocean swim (oftentimes appearing like a dark soft substance). Do not be concerned! Your Sharkbanz is not leaking, nor is its effectiveness reduced.

No. 

Sharkbanz emit a magnetic field that quickly drops off, so sharks cannot sense it from far away. Once sharks enter this magnetic field range, they can be deterred, as Sharkbanz has shown to over-stimulate their electroreception.

Based on the laws of magnetics, the magnetic field created by Sharkbanz drops off at the inverse cube of the distance from the source - this means at a distance of 10 feet and beyond the field is not detectable by even the most sensitive laboratory equipment. 

Sharks will not be attracted into the magnetic field.

The patented shark deterrent technology behind Sharkbanz
products has been extensively researched and tested on a wide variety of shark species, including juvenile Tiger Sharks (up to 9 ft). Positive deterrent results were exhibited by juvenile Tiger Sharks during testing. Adult Tiger Sharks simply were not present during these tests. Tiger sharks use electroreception heavily like other predatory species, thus Sharkbanz has the same deterrent effect on them to reduce the risk.

Additionally, Sharkbanz has received several unsolicited testimonials from customers deterring Tiger Sharks in Hawaii, Australia, and Florida.

The following is via Sue A. on 6/15/2020:

"A group of friends and myself were doing our usual water jogging in Kailua bay. I spotted what appeared to be a log in the water about 10 to 12 ft from us. As it got closer, I could see clearly that it was a Tiger Shark. The shark must have sensed the magnet, shuddered, and abruptly turned, and swam away from us. There were other sightings and bump encounters for a few weeks before our encounter. Happy to discover my Sharkbanz working! I am a believer!"

Another from James C. on 10/02/2022: 

“I've had my Sharkbanz 2 for 5 years and use it multiple times per week. I love it and think it already saved my legs and maybe my life once. I was kiting and was in the water when a Tiger Shark came at me, but then turned at the last moment and just hit me with its tail”

Surfer and Shark Attack Survivor, Jabez Reitman of Ballina, Australia encountered a large tiger shark with Sharkbanz in February, 2015. See our Reviews section:

"After my attack, I did a lot of research into the different products on the market and found Sharkbanz to be the most trustworthy. It wasn't until I came into contact with another shark months later that I was able to test the product first-hand. Last week, I was surfing near Byron Bay when a [4m tiger] shark began circling me. It was incredible to see how fast the [tiger] shark swam away as soon as it came within the magnetic field. I was glad that the band worked but still pretty shaken up so I paddled in to shore."

A Tiger encounter from Nicky C. on 6/21/2017, which is featured on our Reviews page.

Thank you, Sharkbanz! The Tiger Shark veered away, and I swam safely to shore! While swimming at Stuart Beach (FL), I was quite far out wearing my fins and enjoying body surfing waves off the sand bar. At first, I didn't hear the lifeguard's whistle to clear all the swimmers from the water. So when I did look to shore, the beach goers were lined up along the shoreline and the lifeguard was waving his hands to come in. I was the only one still in the ocean. The water was crystal clear that day, and they could all watch the Tiger Shark (4-5 feet long) swimming back and forth parallel to the shore, but closer in than I was. As I'm swimming to shore, the shark turns towards me and follows me, getting closer and closer. When he was within about 6 feet of me, the lifeguard noticed he veered away [which he later told me]. While the shark stayed in the beach area, it never came near me again. THE SHARKBANZ WORKED WELL!"

Lastly, an incident that Sharkbanz customer Gary W. shared with us involving a Tiger shark on Kauai that bit his friend and the friend's board while surfing - from 10/10/2017.

"Last night here on Kaua’i, I was involved in a shark attack. I was wearing a Sharkbanz and my friend wasn’t. He was attacked, but I wasn’t. There really isn’t any hard evidence that I was spared because of the magnet, but it’s an interesting and compelling point. 

We were surfing sunset time [at Davidson’s], and the water had already turned black so we couldn’t see anything underneath. We were about 40’ apart, and I heard a noise and looked over. Then I saw my friend’s board “tombstoning” in the shark’s mouth. Its pec fin, tail, and dorsal fin were breaking the water as it thrashed with the board. There was no provoking to my knowledge as we were just sitting there waiting for waves. 

 My friend was frantically back-stroking and kicking the shark to get away. 

 [With my Sharkbanz]. I paddled straight to him, and as I got there, the shark let go the board. My friend pulled it back to him by the leash,  turned, and was gone on a wave. I watched the shark erratically swim a few circles around me where the incident happened, and the next wave came I was out too … high tide, getting dark so unknown species, but estimate about 10’ Tiger based on the bite size and type."

Much like other safety devices, such as a bike lights, Sharkbanz reduce the risk - they do not eliminate the risk altogether. This principle applies to all common predatory sharks, Great Whites included. Customers in Australia, South Africa, California, Cape Cod, Rhode Island, and Oregon have used our products to deter investigative Great Whites. You can read these unsolicited accounts on our Reviews page. 

Great Whites rely heavily on their electroreception when swimming in open water, and Sharkbanz could effectively deter an investigating Great White. However, it's important to note that Great Whites are unique in that they are the only shark that acts as an ambush predator, attacking from a long distance at high speed. There is no effective way to prevent this type of ambush attack when it occurs.

From a testing standpoint, Sharkbanz are the result of over a decade’s worth of peer-reviewed scientific research on the use of magnetic technology as an active and effective shark deterrent. This compilation of research evidences that permanent magnets project detectable magnetic fields underwater that produce sufficient magnetic fields to elicit avoidance in a range of species including: White Sharks (C. Carcharias). 

Two of our Great White deterrent customer encounters include:

Michael Skogg, Seaside, OR:

"I had a Great White encounter while paddle surfing the cove [...]. After a cleanup set, I was swimming back to my board when a dorsal fin broke between my board and me. It was a big, dark fin and coming at me hard. It got within five or six feet and thrashed really hard - then suddenly the shark made a violent hard left and bolted out of the area. I wore a Sharkbanz on my right wrist and left ankle. Thank God."

Scott Fegette, Carpinteria, CA:

"I got my Sharkbanz 2-3 years ago when Great White sightings picked up off my local break near Santa Barbara. On July 4, I was swimming next to my SUP when a 8-10 ft White did a pass on the other side of my board. I was trying to get back on my board and out of the water when it circled back on my side. Just as I thought it was gonna either bump me off or take a chomp (maybe neither but I was pretty shook), I reflexively kicked out my foot with my Sharkbanz on, and the White did a quick 90 degree turn and swam away fast like in your videos! I was stoked as hell but got ashore fast. Needless to say, I always wear it now."

Sharkbanz deterrent technology also has the ability to deter stingrays, which helps beachgoers, wade fishermen, surfers, and divers reduce the risk of a painful incident.

Our technology will not repel all marine life or other sea creatures like turtles, dolphines, etc.. The reason Sharkbanz can repel sharks as well as other elasmobranch species such as stingrays is the presence of electroreceptors in these species, which detect the magnetic field produced by our technology.

You will still be able to see and encounter non-shark species while wearing Sharkbanz in order to reduce the risk and enjoy greater peace of mind. If you fish and use our Zeppelin product to protect your catch, this device will not deter any target fish species.

We stand behind the quality and workmanship of our products, which you'll experience as soon as you put on your 'Sharkbanz 2'. The ‘Sharkbanz 2’ product is warrantied against defects resulting from faulty workmanship or materials for a period of three (3) years from the date of purchase. Note that the ocean is a highly corrosive environment where pressure and salt can cause damage over time. We recommend you replace your 'Sharkbanz 2' product every four (4) years to ensure top-level quality, comfort, and performance.

Please note that Sharkbanz products should not be exposed to heat over 160°F (70°C), nor at any point should the core chassis be physically damaged or altered. If this occurs, the deterrent technology's effectiveness could be reduced and/or negatively impacted. 

If you ever encounter any potential issues or concerns about your Sharkbanz, you can always write us at: support@sharkbanz.com and we will help.

Visit our Sharkbanz Fishing page, and shop our award-winning Zeppelin product, used for bottom fishing, wade fishing, and spearfishing.