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Alta Futures

Impact Investing

Propeller backs early-stage companies turning breakthrough ocean science into climate solutions built to scale.

Leader

Brian Halligan

Co-Founder & General Partner

Based in

Boston, MA

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Propeller team member presenting to an audience at an event.

About

Who they are.

Some of the most promising climate solutions are hiding in the ocean. Propeller is helping bring them to the surface. Launched in 2022 with a fund of about $117 million, the Boston-based venture firm backs early-stage companies working on marine carbon removal, cleaner shipping and ocean energy, and ocean-grown food and materials. Its partnership with Woods Hole Oceanographic Institution (a former grantee partner of Alta Futures) helps turn breakthrough ocean science into companies built to scale.

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Alta Futures

5,197 Days, 14 Hours, 46 Minutes, 53 Seconds

© 2026 Alta Futures

Social

LinkedIn

Get in touch

info@altafutures.com

Legal

Privacy Policy

Alta Futures

5,197 Days, 14 Hours, 46 Minutes, 53 Seconds

© 2026 Alta Futures

Social

LinkedIn

Get in touch

info@altafutures.com

Legal

Privacy Policy

Alta Futures

5,197 Days, 14 Hours, 46 Minutes, 53 Seconds

© 2026 Alta Futures

Social

LinkedIn

Get in touch

info@altafutures.com

Legal

Privacy Policy

Alta Futures

5,197d 14h 46m 53s

© 2026 Alta Futures