Sesimbra’s coast is made for slow cruising. This 2-hour ride turns the Professor Luiz Saldanha Marine Park into a see-it-up-close adventure, with panoramic underwater windows that make you feel like you’re getting a secret view without getting wet. I really like how the guide ties the scenery to what’s living there—corals and fish on the seabed, plus stories around spots like Friar’s Rock.

My favorite part is the mix of big sea views and classroom-style observations, all at a kid-friendly pace. The one drawback to plan for: like any coastal outing, your underwater visibility can depend on conditions, so if the water is less clear on the day, the view may be a bit softer than the best-case crystal-water scenes.

Key things to know before you go

• Underwater windows on the boat (APNEA) let you watch the seabed from above and below, fast and easy for families
• Professor Luiz Saldanha Marine Park sightings are the point: corals, fish, and protected coastal biodiversity
• Photo pauses at places like Ribeira do Cavalo and Boca do Tamboril Cave help you capture the dramatic coast
• Scenic stops near coves like Mula Bay and Inferno Beach keep the tour lively without feeling rushed
• Respectful distance means you see landmarks without harming the natural area
• A guide-led, English/Portuguese/Spanish experience makes the stories land for everyone

Why this boat tour feels special on the Sesimbra coast

This isn’t just a coastal sightseeing loop. You’re specifically moving through the marine area of the Professor Luiz Saldanha Marine Park, which is part of the Arrábida Natural Park system. That matters, because it shifts the focus from pretty water to the living “neighborhood” beneath the surface.

Aquarama’s boat, the APNEA, is built for this. The hull has panoramic windows so you can look straight at what’s on the seabed while you’re still comfortably on the top deck. It’s a smart design for families, because kids can watch fish and structure without needing goggles or a long swim.

What $34 per person gets you (and why it’s reasonable)

At about $34 per person for a 2-hour outing, you’re paying for three things that usually cost extra on typical tours: a guided marine-park experience, specialized boat viewing, and a family-friendly set-up with life vests. Add in that the tour includes insurance and guide support, and it starts to make more sense.

You also don’t get the usual “we drove past things” approach. You’ll have scenic pauses at specific coastal points, plus time where the underwater windows do the heavy lifting. Since drinks and food are not included, you’re really buying the experience and the view—not a meal.

Setting off from Sesimbra Harbour: your first taste of what’s ahead

You meet at the Aquarama gate right next to the marina entrance. From there, the tour starts in Sesimbra Harbour and heads out at an unhurried pace, taking scenic time toward Ribeira do Cavalo Beach.

This early stretch is more than warm-up. The goal is to spot large schools of fish and to notice coastal plant life linked to the marine park area as you pass. Even if you’re not staring through the windows the whole time, you’ll get oriented to the coastline and the kind of places you’ll be stopping for.

Arrábida Natural Park waters: the onboard “submarine vision” moment

Soon after you leave, the tour concentrates on the marine part of Arrábida Natural Park connected to the Professor Luiz Saldanha Marine Park. This is where the underwater windows become the star feature.

You’ll be able to see the seabed, including corals and many fish (when conditions allow). It’s also where the guide’s narration helps you connect what you’re looking at to the protected area around you. Instead of just pointing at water, the guide explains why this rocky coast supports different life and how protected waters shape what you can observe.

Practical tip: if your group has kids, this is the best moment to “assign a job.” Ask them to find patterns—like where fish schools appear or how the seabed changes from one view to the next.

Ribera do Cavalo Beach: the classic stop for clear-water photos

Ribeira do Cavalo is one of the highlights, and you’ll get a photo/scenic pause here. The water quality is part of the draw, with crystal clear waters specifically mentioned as a signature sight.

What makes this stop feel worth it is the timing and the perspective. From the boat, you can appreciate the wild, rocky edge of the cove while also getting that marine-park context from earlier narration. If you love beach photos but hate crowds, this kind of stop is a quieter way to experience the coast’s drama.

Consideration: if it’s windy or the surface is choppy, windows can still show underwater shapes, but the crispness of what you see may vary. The coastline will still look stunning—you just might get less “wow-fish” clarity than on the clearest days.

Boca do Tamboril Cave and the Friar’s Rock story

As you head along, the route includes stops for scenic viewing near Boca do Tamboril Cave and Friar’s Rock. These are the kinds of places where you really notice the coast’s shape—rock, shadows, and the way the sea cuts into it.

Friar’s Rock is also where learning becomes part of the fun. The tour specifically mentions learning about fishing traditions, and Friar’s Rock is tied to that. Even if you’re not a history buff, it gives the landmark meaning beyond a photo spot.

You’ll get close as safely possible, but with a respectful distance that keeps the protected environment intact. That balance is important. It lets you enjoy the sights without treating the marine park like a theme park.

Smaller coves along the way: Mula Bay and Praia da Mijona

Between the big recognizable stops, the tour makes time for additional scenic points like Mula Bay and Praia da Mijona. These photo pauses matter because they break the ride into moments, not just one long cruise.

I like this part for two reasons. First, you get variety—different angles of rocky coast and changing light patterns. Second, it helps kids stay engaged, because there’s always something to look at, not only underwater windows.

If you’re traveling with older kids, this is a good time to encourage them to compare what they see above water (rock shapes, coves, caves) with what you see below (structure and fish movement through the windows).

Inferno Beach and California Beach: the final stretch of scenery

Near the end, you’ll be looking toward Inferno Beach, with scenic views included, and then California Beach as the cruise continues before returning toward Sesimbra.

These late stops work because they give you a “last look” feeling. You’re already warmed up by earlier underwater observations, so at the end you can focus more on the coastline’s character—how each beach sits in the surrounding rock and where the sea opens out again.

Also, the tour’s pace stays family-friendly. You’re not stuck in one place for long, and you’re not rushed from one viewpoint to the next. It’s a good rhythm for groups that include kids or mixed ages.

The guide and the family-friendly setup that keeps it easy

The tour includes a local guide and runs in English, Portuguese, or Spanish. That multi-language structure matters on a boat, where you can’t easily hear if the crew is constantly moving or repeating everything from scratch.

It’s also thoughtful that life vests are provided for adults (as requested) and children. For families, that reduces worry and helps everyone focus on the experience rather than safety logistics.

You’ll also get pictures, including one with the Aquarama Instagram frame. It’s not essential, but it’s a nice way to end with something concrete—especially if the day’s best moments include underwater viewing that’s hard to capture on your own.

What you’ll likely see under the windows

The tour’s promise is very specific: seeing the seabed, and observing biodiversity linked to the protected rocky coast. Expect to look for corals and many fish and—on parts of the route—large schools of fish.

Some days will feel more dramatic than others. If water clarity is great, fish activity usually looks more obvious. Even if you don’t get constant schools of fish, you can still enjoy how the rocky structure and plant life create different “zones” of underwater life.

If your priority is wildlife spotting, plan your mindset like this: the windows are your microscope, but the coastline is your map. Knowing where you are along the coast helps you understand why certain spots might feel more alive than others.

Who this tour is best for (and who may want something else)

This is a strong fit if you’re traveling with kids, want a marine-park experience without swimming, or like educational tours that still feel playful. The underwater window concept makes it accessible even for families that don’t want to spend a half-day planning beach gear.

It can also work for couples who prefer scenic stops plus a story-driven guide, rather than a long, strenuous hike.

Who might consider a different option: if you’re expecting food included on board, you’ll need to bring your own timing, because drinks and food are not included. Also, if you’re hoping for hands-on activities, note that fishing is not allowed and there’s no mention of swimming or snorkel gear—this is observation-first.

Practical tips to make your day smoother

Bring water. The tour lasts 2 hours, and you’ll likely be outside or near open air areas at least part of the time.

Also bring biodegradable sunscreen. Coastal areas can be sensitive, and this is the kind of simple choice that helps keep the marine park protected.

Finally, set expectations about wildlife viewing: you’re visiting a protected marine area, so the tone is observational. Don’t feed animals, don’t litter, and keep to the guide’s directions so the boat can get as close as safely possible while still respecting nature.

Should you book Aquarama’s Sesimbra underwater-window tour?

I’d book this if you want a family-friendly way to see the Professor Luiz Saldanha Marine Park and the Arrábida Natural Park coastline without complicated prep. The APNEA panoramic windows are the reason it’s worth paying for, and the guide-led storytelling gives those views meaning.

I’d hesitate only if you’re extremely sensitive to weather-based visibility changes or you need food and drinks included. Otherwise, it’s a smart choice for a short, high-reward outing—especially if you want kids to have fun while learning what lives just off the coast.

FAQ

FAQ

How long is the boat sea tour?

The tour lasts 2 hours.

What is the price per person?

The price is listed as $34 per person.

Where do I meet the group?

Meet at the Aquarama gate right next to the Marina entrance.

What’s included in the ticket price?

Included are a local guide, insurance, life vests for adults and children as requested, and pictures (including with the Aquarama Instagram frame).

Do I need to bring food or drinks?

Drinks and food are not included, so you’ll want to plan accordingly.

What should I bring?

Bring water and biodegradable sunscreen.

What languages is the live guide available in?

The live guide is available in English, Portuguese, and Spanish.

Is the tour wheelchair accessible?

Yes, the tour is wheelchair accessible.

Can I fish or feed animals during the tour?

Fishing is not allowed, and feeding animals is also not allowed.