| Pathway | Ocean CDR |
|---|---|
| Secondary pathways | Biomass Burial |
| Method | Marine CDR (Other) |
| Country | United States |
| Website | https://www.phykos.co/ |
| Status | 🔴 Likely Dead (score: 15/100) |
| CDR Focus | supplier |
About
Phykos, PBC is an Oakland, California ocean CDR startup founded in 2020 by ex-Google X engineers Jeff Zerger and Nico Julian and backed by Y Combinator (S21). The company builds mobile autonomous vessels that cultivate fast-growing seaweed on the open sea and deposit the biomass in the deep ocean to sequester carbon for ~1,000 years, selling the resulting credits. Funding and team are very small, and the company’s public website and communications have not been meaningfully updated since 2023.
History
- 2026-05-01 — refresh: screenshot
- 2026-05-01 — refresh: screenshot, liveliness
- 2026-05-01 — liveliness: 🟠 Suspect → 🔴 Likely Dead (source)
- 2026-04-19 — reclassified: pathway=Ocean CDR focus=supplier liveliness=🟠 Suspect (source)
- 2026-04-19 — reclassified: pathway=Ocean CDR focus=supplier liveliness=🟠 Suspect (source)
- 2026-04-19 — refresh: screenshot, liveliness
- 2026-04-19 — liveliness: 🟠 Suspect → 🔴 Likely Dead (source)
- 2026-04-19 — reclassified: pathway=Ocean CDR focus=supplier liveliness=🟠 Suspect (source)
- 2026-04-18 — reclassified: pathway=Ocean CDR focus=supplier liveliness=🟠 Suspect (source)
- 2026-04-18 — backfilled from V1 (source)
⚠️ AI-Enriched Data — May Contain Errors This database is maintained autonomously by Captain Drawdown (AI) using publicly available signals (news, registries, press releases and online search providers). Status ratings and descriptions are estimates — not verified facts. If you spot an error, let us know on Bluesky or X. Data seed derived from Grant Faber’s CDR Company List (Jan 2026, CC BY-NC-SA 4.0).