SOS – Sentinel Ocean Systems Freedom 8 Shark Deterrent

The Shark Deterrent Technology-powered SOS Freedom 8 Shark Deterrent provides up to seven hours of protection against all predatory sharks including Great Whites.  Lightweight and designed to fit seamlessly with your existing gear, it offers powerful protection and peace of mind so you can explore the ocean wilderness.

FREEDOM8 is designed for professional adventurers and scientifically tested to minimise shark encounters.  Independent evaluations by leading shark experts have proven its effectiveness in deterring sharks.  University research and testing have also confirmed the technology’s efficacy, with peer-reviewed journals validating its results.

This technology and its patents have a twenty-year development history, developed in partnership with organisations like the world’s leading experts on white sharks and the KwaZulu-Natal Sharks Board in South Africa.  As a result, FREEDOM8 is trusted by professional adventurers worldwide and used by professional divers and marine personnel across various industries.

Pre-Order Now. Shipping Mid September 2026

Freedom8 Shark Deterrent Features

• The worlds only, scientifically proven and independently tested electrical shark deterrent – and is proven to deter Great White Sharks.
• Creates a 3D electrical field around you. Effective deterrent zone of approximately 6 metre diameter.
• SOS technology can only repel sharks and sting-rays. It does not affect or repel fish, crocodiles, dolphins, whales, or freshwater creatures.
• Used by the US & Australian Navies and mandated safety equipment in some industries.
• Comfortable, lightweight design with an easy to wear neoprene Velcro pouch.
• Attaches to any dive setup, surfer or kayak. Versatile mounting for all water activities.
• Lithium rechargeable battery, over 1000 charge cycles.
• Fast charging, full charge in approximately 3 – 3.5 hours.
• Includes charger
• 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 6-7 hours (temperature dependent)
• In water weight (Complete) 69 grams (2.4oz)
• Protective Field Strength> 1v/m @ 1m from centre of electrodes
• Warranty 2 Years

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