Ever wondered why your fitness tracker gives up the moment you hit the water? Biometric dive technology has evolved from unreliable prototypes into sophisticated systems that monitor your heart rate, breathing, and skin temperature while you're underwater—transforming raw physiological data into actionable insights for safer, smarter diving. In this episode, Marcus Okafor breaks down how these systems actually work, what their limitations are, and whether the technology is ready for serious divers to adopt.

• Biometric dive systems go beyond traditional depth and time tracking by monitoring heart rate, respiratory rate, skin temperature, and sometimes blood oxygen saturation in real time during your dive.

• Optical heart rate sensors face significant challenges underwater—water pressure compresses tissues, cold water ...