+30 6932398213 info@theaseas.com

Swim, Relax, and Explore
the Beauty of the Cretan Sea
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Discover Chania's
Hidden Treasures
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Hidden Gems

Discover secluded beaches and caves accessible only by our exclusive boat tours.

Cretan History

Explore ancient fortresses and Venetian landmarks with our expert-guided historical tours.

Crystal Waters

Swim in pristine, turquoise waters and experience the beauty of Chania’s coastline.

Luxury Experience

Enjoy private boats, local snacks, and personalized service for a seamless, unforgettable journey.

Welcome to Thea Seas | Chania Boat Tour Service

Thea Seas is a boat tour agency based in Chania, Crete, Greece, offering an exceptional range of cruises to the pristine shores of Balos and the historic Old Bay of Chania, that allow travelers to explore the beauty of the Aegean Sea and the stunning Cretan coastline. Each tour is a unique experience, combining adventure, relaxation, and discovery.
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Why Choose Us?

Boat Tours in Chania

At Thea Seas, we offer exclusive boat tours in Chania with personalized service, private boats, and expert local guides. Our tours take you to hidden beaches, historic landmarks, and crystal-clear waters, providing a perfect balance of adventure and relaxation. With high-quality equipment and a commitment to excellence, we ensure an unforgettable, seamless experience.

Your Gateway to Unforgettable Boat Adventures in Chania

Private Boat Rentals, Tailored Tours & Hidden Coastal Gems

At TheaSeas, we turn sea dreams into reality. Departing from the harbors of Kasteli and Kolymbari, explore Chania’s stunning coastline with our handpicked boats, expert local knowledge, and stress-free planning—perfect for families, couples, and adventurers.

  • Perfects Boat for Your AdventureChoose from our fleet of comfortable motorboats and RIBs, ideal for swimming, fishing, or coastal exploration.
  • Local Knowledge, Hidden GemsWe'll guide you to secluded coves, pristine beaches, and must-see spots like Balos Lagoon—best reached by boat.
  • Easy Departures, Stress-Free FunStart your journey from Kasteli or Kolymbari harbor with all essentials included—safety gear, coolers, and expert advice.

Boat Tours

View All Tours
From Chania
Menies beach

Lazareta – Thodorou Boat Tour from Chania

From420 €
Chania, Lazareta island, Thodorou island.
From Chania
Balos - Gramvousa

Balos Boat Tour from Chania

From1,000 €
Chania, Lazareta island, Thodorou island, Sfakas, Chironisia, Limnionari, Menies, Balos, Gramvousa island.
From Chania
Menies beach

Menies Boat Tour from Chania

From550 €
Chania, Lazareta island, Thodorou island, Sfakas, Chironisia, Limnionari, Menies
  • Our boat tour with Thea Seas was beyond amazing! The crew was professional and friendly, and we explored hidden beaches we never would have found on our own. Swimming in the crystal-clear waters of Balos was a dream. Truly an unforgettable experience. Highly recommended!

    Maria K.
    Balos Gramvousa Falasarna Boat Tour
  • We had an incredible time on the Thodorou-Lazaretta tour. The boat was comfortable, the guide was knowledgeable, and the views were stunning. We loved the secluded beaches and swimming with the sunset as a backdrop. Everything was perfectly organized—definitely the highlight of our trip to Chania!

    James P.
    Menies Boat Tour from Kasteli

Why Choose Thea Seas?

Unforgettable Boat Tours with Personalized Service and Exclusive Experiences

  • Private Tours: Tailored experiences with private boats, designed to suit your preferences.
  • Expert Guides: Local professionals providing in-depth knowledge and insights during your journey.
  • Hidden Destinations: Access to secluded beaches and unique spots only reachable by sea.
  • Premium Comfort: Modern boats equipped with high-quality amenities for a smooth, enjoyable ride.
Personalized Boat Tours & Rentals Along Crete’s Stunning Coastline

Set Sail with Thea Seas: Your Chania Adventure Awaits

At Thea Seas, we believe that the best way to experience the magic of Chania is from the water. Our custom boat tours and flexible rentals are designed to immerse you in the hidden coves, crystal-clear waters, and breathtaking landscapes that make Crete unforgettable.​

Whether you’re seeking a tranquil escape to secluded beaches, an adventurous day exploring sea caves, or a romantic sunset cruise, our experienced team is here to craft your perfect maritime journey. With options ranging from half-day excursions to full-day adventures, and the choice of skippered or self-driven boats, your ideal sea experience is just a booking away.

Book Now

Let Thea Seas be your guide to the unparalleled beauty of Chania’s coastline. Embark on a voyage where every wave tells a story, and every destination becomes a cherished memory.