If you’re looking for an experience that combines innovation with natural beauty, the Sesimbra Clear Boat Experience offers just that. This tour is Portugal’s first fully transparent boat adventure, giving you a look beneath the water without getting your feet wet. Departing from Sesimbra’s lively harbor, you’ll glide over clear waters, taking in scenic views of the dramatic coastline, with stops at stunning beaches like Praia do Ouro and the famous Praia do Ribeiro do Cavalo.
What I really appreciate about this experience is how intimate and eco-friendly it feels. The small group size ensures you won’t be just another face in a crowd, and the sleek, crystal-clear boat creates a sense of unity with the environment. Plus, the chance to see marine life so close that you can almost touch it is genuinely memorable. One thing to keep in mind—if you’re prone to seasickness, bringing motion sickness tablets might be wise, especially since even a gentle sea breeze can cause some to feel queasy in the open water.
Another aspect I love is the unique perspective this boat provides. Unlike traditional boat trips, the transparent hull allows you to admire the underwater scenery from above, giving an almost “aquarium-like” view. But the tour isn’t just about pretty sights; it’s also about appreciating the natural harmony of the coast, with guides likely sharing insights about the local marine environment. A minor consideration: the tour’s duration is around 1.5 to 2 hours, which is perfect for a relaxed excursion but might feel short if you’re eager to linger longer at each stop.
- Innovative Design: The fully transparent boat creates a seamless connection with the marine environment, perfect for nature lovers.
- Small, Private Group: Enhances comfort and allows for more personalized attention from guides.
- Multiple Scenic Stops: Including Ribeiro do Cavalo, a famed beach known for its dramatic cliffs and swimming spots.
- Eco-Conscious Approach: The boat’s discreet design respects the landscape while promoting sustainable tourism.
- Marine Life Observation: You’ll see the underwater world right beneath your feet, making it ideal for families, couples, or solo travelers.
- Practical Tips: Bring sunscreen, a camera, and a towel; shoes are stored safely, and minimal belongings are recommended to protect the boat’s surface.
Booking the Sesimbra Clear Boat Experience sets the stage for a relaxed, enjoyable adventure. The tour begins with a brief safety briefing, where guides like “João” or “Maria” typically explain the vessel’s unique features and safety protocols. The departure point is straightforward, with clear instructions on arrival time—be there at least 10 minutes early to settle in comfortably.
Once aboard, you’ll enjoy scenic views of Sesimbra’s coast, with the boat’s transparency revealing the underwater scenery below. This part of the tour lasts about 20 minutes, during which the guides might point out specific features of the coastline or marine life they spot. The real highlight is the view into the water’s depths, where you’ll see rocks, fish, and plant life in crisp detail, a feature that many reviews praise as “breathtaking” or “like floating in an aquarium.”
Next, the boat sails towards Ribeiro do Cavalo, a pristine beach famed for its rugged cliffs and clean waters. Here, you’ll get about 30 minutes for photo opportunities and swimming. The water is described as crystal clear, inviting you to take a dip and relax while soaking in the scenery. Several reviewers mention how peaceful and uncrowded this spot feels, making it a perfect hideaway for a quick swim.
A secret stop follows, which is often a less-known view or small cove. This part includes another photo stop and scenic views, lasting approximately 30 minutes. It’s less about tourist crowds and more about enjoying the tranquil beauty of the coastline. Guides tend to keep the atmosphere casual and friendly, eager to answer questions or share local stories.
The tour concludes with a gentle sail back to Sesimbra, leaving you with plenty of photos and a refreshed appreciation for the region’s natural treasures.
The Fully Transparent Boat – A View Unlike Any Other

The boat’s colorless material creates a “floating aquarium” effect, allowing you to see marine life and underwater rocks from above. This transparency does more than just impress; it transforms how you experience the coast, making it feel like part of the ocean.
Focused Small Groups – Personalized and Relaxed

With a limit on group size, you’re less likely to feel rushed or lost in a crowd. This creates an intimate atmosphere where your guide can answer questions and point out hidden marine gems.
Ready to set sail again? More boat adventures we've reviewed in Sesimbra
Scenic Stops at Ribeiro do Cavalo and a Secret Cove

Both stops offer different experiences: one is a popular, postcard-worthy beach, while the other is a quieter, more secluded spot. The crystal-clear waters at Ribeiro do Cavalo are especially praised, with many calling it a “must-see” for swimmers and photographers alike.
Marine Life and Underwater Views

From fish to plants, seeing the underwater world from the safety of the boat provides educational value and pure awe. Several reviews mention how “you feel like you’re floating directly above the sea life,” which makes this tour especially engaging for families and curious travelers.
Eco-Friendly and Respectful
The boat’s design respects the coast’s natural beauty, with no intrusive or disruptive features. It’s a responsible way to enjoy the area while minimizing environmental impact.
Practical and Family-Friendly

While not suitable for very young children or pregnant women, the experience suits most adults, non-swimmers included—if they’re comfortable in a boat and bring their gear.
This experience is perfect if you’re looking for a short, relaxing activity that offers a novel perspective on the Portuguese coast. It’s especially suitable if you prefer small-group outings over large tours, and if you’re drawn to marine scenery and wildlife.
You’ll get the best value if you’re staying near Sesimbra or Lisbon, as the tour is easily accessible and doesn’t involve lengthy travel. The 1.5 to 2-hour duration makes it an ideal standalone activity or a pleasant addition to a day of exploring the area. The fact that you can reserve and pay later adds flexibility—perfect in case your plans change unexpectedly.
For photographers, the scenic vistas and underwater views provide excellent photo opportunities, especially early in the morning or late in the afternoon when the light is softer. Families and couples will find the experience enchanting, while solo travelers can enjoy the peaceful, reflective nature of sailing along this rugged coastline.
While the tour isn’t the cheapest activity in the region, the price reflects the innovative design and personalized experience. The small group size and eco-conscious approach add value, and the inclusion of marine observation and swimming opportunities makes it a well-rounded outing. Remember, food and drinks aren’t included, so plan to bring snacks and water, especially on hot days. Considering the uniqueness of the transparent boat and the scenic stops, it offers good value for those seeking an authentic and immersive coastal experience.
This adventure suits anyone eager for a new way to see the coast—whether you’re a nature lover, a camera enthusiast, or just someone looking for a peaceful seaside outing. It’s ideal for couples, small groups of friends, or solo travelers who appreciate intimacy and quiet beauty. However, it’s not suitable for very young children, pregnant women, or those with mobility or medical concerns.
The Sesimbra Clear Boat Experience delivers a genuinely different way to enjoy the sea, blending innovation with the natural landscape. The transparent design offers a close-up view of marine life and the coastline—something you won’t find on traditional boat trips. It’s an experience that feels both relaxing and awe-inspiring, perfect for those who love quiet, scenic moments and want to see Portugal’s coastline from a fresh angle.
If you value authentic encounters with nature and appreciate modern, eco-friendly design, this tour is a standout choice. It’s a great option for travelers who want a manageable, intimate adventure that highlights the region’s raw beauty while respecting the environment. Whether you’re in Portugal for a short trip or a longer stay, this experience stands out as a memorable highlight.
Is this tour suitable for children?
It’s best for children over 3 years old. Very young kids or infants might find the boat too unstable or not engaging enough.
Can I bring my own food and drinks?
Food and drinks are not included, and you might find it helpful to bring snacks, water, or a light meal for the trip.
What should I wear?
Bring swimwear, a towel, sunscreen, and a hat. Shoes are stored safely, so wear comfortable footwear that can be removed easily.
Is the tour accessible for people with disabilities?
It’s not suitable for wheelchair users or people with mobility issues, as access might be limited.
What if the weather is bad?
Strong winds or rough seas could lead to rescheduling for safety reasons. Always check the weather forecast before your trip.
How long does the tour last?
Expect about 1.5 to 2 hours, including stops and sailing time.
Do I need to book in advance?
Yes, booking ahead is recommended. You can reserve now and pay later, offering flexibility if your plans change.
More Boat Tours & Cruises in Sesimbra
More Tour Reviews in Sesimbra
Not for you? Here's more things to do in Sesimbra we have recnetly reviewed
- Arrábida – Sesimbra: Boat Tour Mysteries of Cape Espichel
- Explore Arrábida by Boat
- Sesimbra: First Scuba Diving Experience in the Ocean
- Lisbon: Try Dive in Arrábida Marine Reserve Setubal Sesimbra
- Sesimbra: Wood-fired bread workshop with rural breakfast
- Lisbon: Rock Climbing&Abseiling Arrábida Setubal Sesimbra
- Sesimbra: Bachelor/Bachelorette Party Boat Tour
- Explore Sesimbra: Private Sport Fishing All Inclusive Tour
- Sesimbra: visit to the Caves
- Sesimbra: Scuba Diving Experience with photos included
- Sesimbra: Exclusive Private Yacht tour with sea activities!
- Sesimbra: Clear Boat Experience
