The Thalass Story

Why Now?

More people are swimming in open water than at any point in history. And yet the tools available to them have barely changed.

Surfers have Surfline. Cyclists have Strava. The open water swimmer has nothing built for them.

Your wearable knows your body; the ocean has its own data.

Thalass brings the two together, using AI to turn every swim into a personalised report backed by expert-reviewed coaching, so you enter the water knowing exactly what to expect.

OUR APPROACH

Enhanced by AI. Backed by Trust.

Your post-swim report is written by our AI coach. What it knows comes from the open water community, and every part of it is peer reviewed by people who coach and swim.

Coach or swim in open water and want to help? Join the peer review panel

EXPERT REVIEWER HIGHLIGHT

Lorenzo Marugo

Italian National Swimming Coach — Pool & Open Water

Our AI coach writes your post-swim report from the Thalass knowledge base. Field experts peer review that knowledge base, and Lorenzo is one of them


Lorenzo Marugo is an Italian national team swimming coach with expertise across both pool and open water disciplines. His deep knowledge of swimmer physiology, performance classification, and ocean response of the body feeds into our Thalass's AI coaching framework. This helps us build science backed insights that are grounded in real competitive experience.

Technology Partner

EGOIST

Egoist Machines is a Y Combinator-backed startup (YC S26) building user-first machine learning infrastructure and a portable personalization layer called the AI Passport.

Through our partnership, your Thalass swim profile can travel with you, so the AI tools you rely on understand you as a swimmer, while you stay in full control of what's shared.

Interested in joining the Thalass mission? Get in touch.

Swim With Us