Seasteading means building floating societies with significant political autonomy.

Nearly half the world’s surface is unclaimed by any nation-state, and many coastal nations can legislate seasteads in their territorial waters.

The Seasteading Institute is a nonprofit think-tank.

We promote the creation of floating ocean cities as a revolutionary solution to some of the world’s most pressing problems: rising sea levels, overpopulation, poor governance, and more…

New to Seasteading?

What about tsunamis? Can I afford it? Who will govern? We answer your questions with short videos.

We’re building a Seastead!

NEW BLOG POST

Self-publishing Workshop with Adam Corres (Dec. Social One)

Join us for a self-publishing workshop, a continuation of our Novelists Program. All are welcome, whether or not you are currently writing a novel! #nanowrimo

The First Seastead

The dawn of the age of Seasteading began on February 3, 2019, when Ocean Builders achieved an engineering feat and an environmental feat. They proved that a single-family seastead can float stably in international waters for less than the cost of the average American home and they achieved a tremendous biodiversity breakthrough.

Our Book

The most complete account of the cutting-edge research and the visionaries making it happen.

Seastead Swag!

Support The Seasteading Institute and adorn yourself with seasteading t-shirts, towels, hoodies, phone cases, water bottles and notebooks in our merchandise shop.

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Get Involved

Stay connected with the global seasteading community!

Active Projects

Several Seasteading projects are already under way! Get the latest news here.

Read, Watch, Listen

Do a deep dive into the world of Seasteading through our blog, our podcast, and our extensive video series.