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DAIVIN!

DAIVIN!

Winter 2026

Tankless Dive Gear - Breath Autonomy at Sea, Land & Space

San Francisco, CA, USA20261 peopleActive
Hard TechHardwareFuel CellsAerospaceMaritime

About Company

DAIVIN! builds tankless dive gear that unlocks breath autonomy in extreme environments. Starting from underwater environment our mission is to remove the need for dangerous, heavy and bulky oxygen tanks in space, air and on land and replace them with water!

In Their Words

How did your company get started? (i.e., How did the founders meet? How did you come up with the idea? How did you decide to be a founder?)

The idea started while diving. I surfaced, sat in a coffee shop, and asked a simple question: fish breathe underwater without tanks - why can’t humans? Diving gear is heavy, complex, and logistically constrained, yet the surrounding water already contains the oxygen we need. I looked into the physics and realized this wasn’t a biology problem, but an energy problem. By applying electricity to water, it’s possible to generate breathable oxygen on demand. That insight led me to start DAIVIN!. With support from my family and people along the journey, I committed full-time to turning that idea into a working system!

What is the core problem you are solving? Why is this a big problem? What made you decide to work on it?

The core problem is that human access to the ocean is still constrained by heavy, pressurized gas tanks. Diving depends on transporting, storing, and managing large volumes of breathing gas, which drives cost, complexity, and risk. This is a big problem because tanks scale poorly. Supporting a single diver for hours can require dozens of cylinders weighing hundreds of kilograms / lbs, with significant capital cost, operating cost, and logistical overhead. These systems also introduce failure modes - equipment issues remain a major contributor to serious diving accidents. I decided to work on this after diving myself and realizing the constraint isn’t oxygen availability, but how we access it. Water already contains the oxygen we need. If a diver can generate breathable oxygen on demand using water and electricity, tanks - and the risks and logistics that come with them - can be removed. That realization led me to build DAIVIN!

What is your long-term vision? If you truly succeed, what will be different about the world?

Our long-term vision is to eliminate oxygen tanks entirely and replace them with on-demand breathing from water. Oxygen should not be a logistics problem; it should be generated where it’s needed. If we succeed, access to extreme environments changes fundamentally. In the ocean, in space, at high altitude, in crisis zones, hospitals, and aircraft, breathing will no longer depend on transporting and storing pressurized gas. It will depend on water and energy - resources that are far more abundant, safer, and cheaper. This shift matters because water is everywhere and oxygen gas is not. In space, oxygen exists in ice. In the ocean, it’s in water. On mountains, it’s in snow. Treating oxygen as something to be hauled around in tanks is a legacy constraint. Just as early semiconductor advances made computing ubiquitous, on-demand oxygen generation can unlock sustained human presence in environments that are currently difficult, dangerous, or inaccessible. Our goal is to make those environments reachable, scalable, and safe. Check the dive video out here: <https://youtu.be/r5HfL8Bw0dw>

Active Founders

Leo Kankkunen

Leo Kankkunen

Founder & CEO

Invented and tested the first-ever tankless dive gear in history. Served in the military and became the youngest certified electrical engineer in Finland, authorized to independently sign electrical High-Voltage power line constructions. Holds a B.Eng. in Electrical Engineering and an M.Sc. in IEM and Innovation Management. A certified diver and two-time founder with a strong background in deep tech and innovation.

Company Facts

Visit Website
workspace_premiumBatchWinter 2026
groupTeam Size1
calendar_monthFounded2026
trending_upStageEarly
categoryIndustryIndustrials
location_onLocationSan Francisco, CA, USA
boltStatusActive
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