AI - Your swim, decoded.

Every swim contains more information than you think. The water temperature, the current running against you, the swell you were fighting — and underneath all of it, what your body was actually doing in response.

Thalass connects your wearable to that picture. Upload your swim data and our AI coach analyses your performance against the exact conditions you were swimming in — not just how fast you went, but why. The result is a personalised insight report after every swim, with guidance on what it means for your next one.

Over time, Thalass builds a model of how you specifically respond to the ocean — your cold tolerance, your current threshold, your optimal conditions window. The more you swim, the smarter it gets. Biohacking for the open water — in the environment that actually matters.

Four Layers of Ocean Intelligence


01 — Live conditions

Know before you go: Currents, temperature, tides, swell, wind, and water quality — pulled from world-class oceanographic sources and updated in real time, so you always know what the water has in store.


03 — AI Assistance

Your ocean, your data: Connect your swims and biometrics. Thalass builds a picture of how you perform in different conditions — water temperature, swell, currents — so the more you swim, the smarter your insights become. The ocean changes constantly. Your understanding of it should too.


02 — Going Together

The ocean is better and safer when shared: Find clubs, join swims, and discover who else is in the water near you. Thalass brings swimmers together — from Sunday morning groups to serious training squads — with shared conditions, club events, and a community built around the spots you love.


04 — Personal Data

Your ocean, your data: Connect your swims and biometrics. Thalass builds a picture of how you perform in different conditions — water temperature, swell, currents — so the more you swim, the smarter your insights become. The ocean changes constantly. Your understanding of it should too.

From joining Thalass to swimming with confidence — in any water, anywhere.

How it Works

Three steps in.

Step one - Find your spot

Browse a global map of swim locations. Conditions, recent reports, and active clubs at every site.

Step two - Read the water

See live conditions and your swim window. Know what to expect before you ever touch the water.

Step three - Swim with others

Join a club, follow swimmers near you, log your sessions. Build a community around your spots.