Accelerating the Potential of Ocean Carbon Removal

We’re harnessing advanced carbon sensing to help ocean carbon removal projects confidently monitor their CO₂ drawdown.

Unlocking the ocean's remarkable capacity to mitigate climate change.

We're pioneering the first comprehensive monitoring, reporting, and verification (MRV) solution for ocean carbon removal projects to measure and validate their CO₂ drawdown.

Our mission is to unlock the 5 gigatons annual potential of the oceans to address the crucial challenge of removing 100-1000 gigatons of CO₂ from the atmosphere by 2100 to avoid climate change’s worst impacts.

A New Paradigm in Ocean Carbon Monitoring

At Subtidal, we're not just developing a solution; we're pioneering an entirely new paradigm in ocean carbon monitoring, Carbon Flux, to provide a 3D view of ocean carbon drawdown.

Here’s our 3-step process:

Tell Us About Your Project

Reach out with details on your CDR project. We’ll build a custom Carbon Flux system tailored to your CDR project's needs.

Install & Measure

We’ll deliver and install your Carbon Flux system around your CDR project to continuously monitor your CO₂ drawdown.

Discover Your Impact

Access high-resolution data 24-7 to monitor your project's CO₂ drawdown, optimize your project's performance, and validate your carbon credits.

Get Early Access As a Subtidal Pilot Partner

We're in the exciting phase of building the first version of our Carbon Flux solution and are seeking a select number of leading ocean carbon removal projects to join us as we test and refine our cutting-edge technology.

ARE YOU WORKING ON OCEAN CARBON DIOXIDE REMOVAL?

If you're developing projects in the vital areas of alkalinity enhancement, macroalgal cultivation, sea forestation, or natural blue carbon systems like seagrass and marine protected areas, we would be delighted to hear from you.

Reach out and be considered for our exclusive Pilot Partner program.

Meet Our Team

At Subtidal, we're bonded by our shared passion for the oceans, regeneration, and innovative tech solutions. Our commitment drives us to harness the power of the seas to create novel solutions that address the urgent task of climate change mitigation. A proud spinout from the world-renowned Woods Hole Oceanographic Institution, our company encapsulates 15 years of unwavering dedication by our Co-Founder & Chief Scientific Officer, Matt H. Long, in pioneering advanced ocean carbon monitoring solutions.

  • CO-FOUNDER & CEO

    Casey has spent the last 15 years building startups with a social good. She was formerly COO @ Greener Grazing, where her team was working to eliminate methane in cows through ocean-based Asparagopsis seaweed farming, and was previously Head of Product @ Spire, the first wearable to track mental and physical health via respiratory monitoring. She was named Most Influential Foreigner in China in 2010 for founding China’s first person-to-person microfinance platform, Wokai.

  • CO-FOUNDER & CHIEF SCIENTIFIC OFFICER

    Matt has spent the last 15 years figuring out how to solve hard carbon flux measurement problems in our oceans. Hailing from Woods Hole Oceanographic Institution (WHOI), Matt is a world leader in biogeochemistry, ocean engineering, and fluid dynamics to combine existing technologies to create transformational ocean technologies.

We’re Hiring!

We’re seeking an Embedded Systems & Electrical Engineer who will play a core role in designing and building Subtidal’s solutions for monitoring, analyzing, and reporting on ocean carbon sequestration accurately, in real-time, and at scale.

We're on the hunt for a proactive, creative self-starter who has a passion for crafting systems from inception, who thrives in a swift-paced environment, and who shares our passion for working with the oceans to fight climate change.