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YC-backed DAIVIN is building tankless dive gear around water electrolysis

Founder Leo Kankkunen has shown a prototype, while DAIVIN's own spec sheet says its 5-kilogram system remains conceptual.

By RuntimeWire Staff · Published Aug 13th, 2026, 8:34pm CT

Illustration of DAIVIN's tankless dive gear prototype, showing a diver wearing a compact water-electrolysis breathing unit on their back.

Founder Leo Kankkunen has shown a prototype, while DAIVIN's own spec sheet says its 5-kilogram system remains conceptual.

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