SOS - Freedom8 Shark Deterrent

Freedom8 Shark Deterrent - Sentinel Ocean Systems

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SOS FREEDOM 8 is for professional adventurers and is scientifically tested and designed to reduce the risk of shark interaction. FREEDOM8 products have been independently evaluated to effectively turn sharks away by the world’s leading scientific experts on sharks. Independent research and testing by universities has resulted in a number of peer reviewed science journals confirming the effectiveness of the technology.

The technology and patents have a twenty-year development history, in partnership with organisations such as the world’s leading experts in White Sharks, the KwaZulu-Natal Sharks Board in South Africa. As a result, FREEDOM8 is trusted by professional adventurers around the world and used by professional divers and marine personnel in various industries.

Universal Fit
Attaches to any dive setup, surfer or kayak. Versatile mounting for all water activities.

Fast Charging
Fast charging, full charge in approximately 3 – 3.5 hours.

3D Protective Field
Creates a 3D electrical field around you. Effective deterrent zone of approximately 6 metre diameter.

Freedom8 Electrical Shark Deterrent system
The Science behind the Freedom8 Electrical Shark Deterrent system is built on a well‑established principle in shark biology: sharks depend on their ampullae of Lorenzini – highly sensitive electroreceptors – to interpret the tiny electrical signals emitted by living prey. These receptors are incredibly effective at close‑range detection, but they’re also extremely vulnerable to strong, irregular electrical fields.

A Purpose‑Built Electrical Field That Disrupts Shark Approach Behavior
The Freedom8 generates a powerful, low‑frequency electrical field between two electrodes. This field extends in a three‑dimensional radius around the diver. When a shark enters the field, the signal overwhelms its electroreceptors, creating a strong but harmless aversive sensation. The shark’s natural response is to veer away.

For divers, this means a significant reduction in the likelihood of a close‑range encounter, without affecting normal marine life or the surrounding environment.

What Happens Underwater
The Freedom8 emits a precisely tuned electrical pulse optimised for shark sensory disruption.
The pulse forms a protective zone around the diver, typically extending several meters.
As a shark approaches, the field interferes with its electroreception, triggering a clear avoidance response.
The deterrent effect is behavioral, not injurious – the shark is not harmed, only repelled.

Proven, Field-Tested Technology
Technology used by the Freedom8 has been validated through independent testing, controlled field trials, and extensive real‑world use by professional divers, spearfishers, and commercial operators. Across thousands of hours in the water, the system has consistently demonstrated its ability to discourage unwanted shark interactions.

Built for Demanding Dive Environments
The Freedom8 is engineered for reliability and ease of integration into professional dive workflows. Whether you’re guiding clients, running a shop, or diving remote sites, the system provides an added layer of confidence without complicating your setup.

• Rugged construction for daily use
• Streamlined deployment and charging
• Designed to complement existing dive gear
• Suitable for recreational, technical, and commercial applications

Battery pack life - Nominal 1,000 charges
Storage Temperature - Between 0C – 60C (32F – 140F)
Operating Temperature - Between 12C – 40C (53.6F – 104F) Lower temperatures will reduce the operating time
Maximum Operating Depth - 50 meters (164 feet)
Dry Weight (Complete) - 1025 grams (2.26 lb)
Unit Operating Time - 4-5 hours (temperature dependent)
In water weight - (Complete) 69 grams (2.4oz)
Protective Field Strength > 1v/m @ 1m from centre of electrodes
Warranty - 2 Years

The SOS Freedom 8 Unit comes complete with:

• Lithium rechargeable battery, over 1000 charge cycles
• Universal Charger (will suit any voltage or frequency)
• Comfortable, lightweight with an easy to wear neoprene Velcro pouch
• Product Instruction Booklet
• Long-life battery lasts up to 6 hours with LED battery life indicator

WARNING: We encourage people to wearSOS Freedom 8 when working in or enjoying the sea to minimize the risk of shark attack but sharks can be dangerous and often unpredictable creatures. While extensive testing has been done and great care is taken to develop and manufacture the Shark Shield range of products, it is impossible to guarantee that all sharks will be deterred under all circumstances. Water-based activities in the presence of sharks are inherently dangerous and are not recommended therefore we recommend that if a shark is sighted that the user leaves the water.

A large pulsing current is emitted from the SOS Freedom 8 antenna to produce the protective electric field. When unintentionally coming near or in contact with the antenna it is possible that muscle spasms can occur to various degrees and therefore the user may need to make adjustments to limit contact (for more information refer to FAQ's "will I get an electric shock"). In addition, anyone with a pacemaker, are pregnant, or has a health condition that could be affected by the electric field should not use the device. Such health conditions include heart disease, a history of heart problems, peripheral vascular disease, stroke, a history of fainting or epilepsy, or lung disease.