Key Takeaways

  • Seagrass covers only 2% of the ocean floor but captures 20% of marine carbon, far outperforming coral reefs that take most climate funding.
  • Roughly 20% of commercially important fish species depend on seagrass habitats as nurseries during early growth stages.
  • Autonomous underwater vehicles replace slow, dangerous manual diver expeditions with automated seabed mapping and robotic seed dispersal.
  • Will O'Brien identifies environmental "green tape" and permitting hurdles as the primary operational barrier to scaling ocean restoration.

Seagrass Holds 20% of Ocean Carbon on 2% of the Seafloor

Marine climate capital flows toward things that look good in documentary footage. Coral reefs get colorful photo spreads, celebrity endorsements, and the bulk of non-profit donations. Seagrass gets ignored because it looks like a flooded cow pasture.

Will O'Brien started Ulysses by looking at the numbers rather than the optics. During a conversation with John Collison and Chris Sacca, O'Brien pointed out the massive gap between where ocean money goes and where carbon actually lives. “Coral gets a lot of the funding, and seagrass is really this unsung hero of the ocean. It covers 2% of the seafloor but holds 20% of the ocean's carbon,” O'Brien said.

Carbon density is only half the argument. Coastal grasses anchor the global food supply. “About 20% of commercially important fish stocks rely on seagrasses as a habitat,” O'Brien noted. When coastal meadows die off, juvenile fish lose the cover they need to survive predators before swimming into deeper waters.

That creates a direct economic threat for coastal populations. “Basically, the population curves are not really looking good for many fish species. It's like billions of people rely on it as their primary source of protein or income every day,” O'Brien said. If the nursery collapses, the commercial fishery collapses behind it.

Green Tape Slows Down Underwater Drones More Than Engineering

Restoring seagrass has historically been a manual, artisanal job. Teams of human divers suit up, swim slow grid patterns across coastal waters, inspect the bottom by eye, and press individual plants into the mud by hand. The process is expensive, dangerous, and restricted to calm waters and shallow depths.

Ulysses automates the entire loop with autonomous underwater drones. The company splits the operational problem into two mechanical steps. First, the hardware scans the seabed to build high-resolution maps. As O'Brien explained, “First of all, you have to understand where to restore. So you have to map and understand where is there seagrass, where is there not.” Once the survey drones pinpoint bare areas, robotic seed distribution vehicles follow behind to plant seeds at scale.

Building underwater robotics that survive salt water and high pressure was difficult, but the real wall was bureaucratic. Regulators often treat restoration hardware with the same suspicion as commercial dredge operators or offshore oil drillers.

O'Brien calls this barrier green tape. Well-meaning environmental rules created to stop industrial destruction now freeze the permits required to fix degraded marine zones. “Unfortunately, you know, I think this is kind of one of the saddest things about the environmental movement is you have this concept of like green tape, right? Like red tape and green tape. It's like, yeah, that is like the single biggest barrier,” O'Brien said. When getting permission to drop seeds takes two years of environmental impact filings, hardware speed does not matter.

What to Do With This

Run an attention-to-impact audit on your industry this week. If you build in climate or hardware, identify the sub-sector that captures 80% of press mentions, then calculate its real throughput against duller alternatives. If you plan to deploy physical assets in regulated spaces, call a local permitting officer before finalizing your product roadmap. Treat permitting lead times as a core product constraint rather than a legal afterthought.