aid: daivin
name: Daivin
description: 'DAIVIN! is a deep-tech hardware company (Y Combinator Winter 2026, based
  in San Francisco and Finland) building tankless diving technology. Its core product,
  SPRING, is marketed as the "world''s first tankless diving technology": instead of
  carrying heavy pressurized oxygen tanks, a diver wears a lightweight vest of electrolyzers
  and a battery belt that use electricity to split water on demand into breathable
  oxygen (O2) and hydrogen (H2), targeting depths up to 200 meters / 650 ft. Founder
  Leo Kankkunen frames breathing as "fundamentally an energy problem," and the company
  envisions applications beyond recreational and professional diving across space exploration,
  high-altitude rescue, hospitals, and aircraft. Added to the API Evangelist network
  as a venture-capital portfolio lead surfaced via y-combinator. Daivin runs a conceptual
  marketing website (Wix) and a news blog; it publishes no public API, developer portal,
  SDK, or other machine-readable developer surface, so no API artifacts apply to this
  provider.'
url: https://raw.githubusercontent.com/api-evangelist/daivin/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://static.wixstatic.com/media/3a3f12_27889fdcbf604e6d84bb16761193d675~mv2.png/v1/fill/w_1024,h_1024,al_c/3a3f12_27889fdcbf604e6d84bb16761193d675~mv2.png
tags:
- Company
- Deep Tech
- Hardware
- Diving
- Electrolysis
- Oxygen Generation
- Life Support
- Y Combinator
- San Francisco
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.daivin.tech
- type: Blog
  url: https://www.daivin.tech/blog
- type: DomainSecurity
  url: security/daivin-domain-security.yml
- type: Twitter
  url: https://x.com/DAIVIN_TECH
- type: YouTube
  url: https://www.youtube.com/@DAIVINTECH
- type: LinkedIn
  url: https://www.linkedin.com/company/daivin
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence