Medulin: Glass Boat Tour Experience to Kamenjak with Mermaid

The best part of this Medulin boat trip is the mix of glass-bottom viewing and swimming at Kamenjak. You can watch Adriatic fish below the boat, then get into the protected water yourself. The short route also reaches Golumber Cave, a natural opening in the cliffs that gives the trip a little adventure without taking up a full day.

I like the three-hour length, especially for families with young children or anyone who does not want a long ride at sea. I also like the Mermaid element: she swims near the anchored boat, feeds fish, and gives children something to watch between stops. The main consideration is that the route can change, and the Porer lighthouse is not guaranteed on every outing.

Key points to know before booking

• Golumber Cave: Enter or explore the cave within the Kamenjak cliffs during the swimming stop.
• Glass-bottom boat: Watch local Adriatic fish from the boat, with a fish-feeding activity for children and adults.
• Three-hour schedule: This is the shortest boat excursion offered, making it easier to fit into a busy Istrian day.
• Porer lighthouse: Photograph the 1846 lighthouse when the day’s route includes it.
• Family focus: Music, drinks, swimming, and the Mermaid character keep the trip active for children.
• Weather matters: The captain may alter the route or cancel for safety, with a refund or alternate date offered.

A short cruise from Medulin to Kamenjak

This excursion leaves from Medulin Harbour and returns to the same place about three hours later. The boat heads toward the Medulin archipelago, giving you a broad view of the small islands and rocky Adriatic coast before reaching the Kamenjak area.

I see this as an easy introduction to the coast rather than a full sightseeing expedition. You get several different activities in one outing, but none lasts long enough to become the entire focus. That balance is useful if you want some sea time without giving up most of your day.

The price is $34 per person. For that amount, you receive the boat ride, drinks, music, the captain and crew, toilet access, swimming, the cave visit, fish feeding, and the Mermaid entertainment. Food is not included, so bring a snack if you expect children to get hungry after swimming.

At the advertised rate, the trip offers fair value for a family-friendly outing. It becomes less attractive if your main goal is a long cruise or a guaranteed visit to every advertised sight. One group found that, on its day, the boat did not reach the lighthouse and spent extra time cruising around an island before returning. That makes it wise to treat the lighthouse as a possible bonus rather than the core reason to book.

Seeing the seabed through the glass floor

The glass-bottom section gives you something to do even when you remain on board. You can peer into the water and watch local Adriatic fish moving below the boat. The view will depend on the light, water conditions, and where the captain stops, so you should not expect an aquarium-style display.

The fish-feeding activity adds a bit of action. Instead of simply pointing at the water, the crew helps create a reason for fish to gather near the boat. Children often get the most from this part because they can switch between looking through the glass and watching the fish near the surface.

Bring a camera, but protect it from splashes. The boat trip combines sightseeing with swimming, and wet hands are likely. Sunscreen, water, a towel, and swimwear belong in your day bag.

The boat also has music and drinks. Those small comforts matter on a short family outing, since the ride is not built around a formal talk or a long guided explanation. You get a relaxed cruise with several visual distractions instead.

Kamenjak swimming stop and Golumber Cave

The main active stop takes place in Nature Park Kamenjak. The water is protected, and the plan includes time for swimming and snorkeling. You can cool off from the sun, watch the water around the boat, and explore the area at your own pace during the stop.

Golumber Cave is within the cliffs of Kamenjak. Reaching it gives the trip a clear point of interest beyond simply sailing past the shore. Depending on the conditions and how the stop is organized, you may enter the cave on your own from the water.

That last detail is important. This is not a long guided cave expedition with a detailed history talk. The cave experience is short and practical: swim toward the opening, have a look, and return to the boat. It works well for people who want a small adventure but do not want technical activity or a demanding outing.

You should be comfortable in the water before booking. The trip is not suitable for people with heart problems, people prone to seasickness, or wheelchair users. The supplied information does not give a detailed account of boarding arrangements, so anyone with mobility concerns should ask the operator before paying.

The Mermaid and the family atmosphere

The Mermaid is the most unusual part of the outing. While the boat is anchored for swimming, she enters the water, swims near the boat, and helps create a playful scene for children. She also feeds fish, which gives young passengers a reason to keep watching after the first excitement of the boat ride fades.

One parent particularly appreciated that the Mermaid tried to offer the children something during the snorkeling stop. That is the right way to think about this feature. It is not a full performance with a long story. It is a cheerful character interaction built around swimming, photos, and fish.

You can also take photographs with the Mermaid. Families with small children may find this more memorable than another standard view of the coast. Older children could see it as either fun or a little young, so consider your family’s interests before booking.

The crew has also been described as friendly and helpful, particularly during the Mermaid and swimming portions of the trip. Still, the experience is simple. If you want detailed commentary about Istrian history, marine life, or the park, this may feel light on information.

Porer lighthouse and the changing route

Porer lighthouse was built in 1846 during the Austro-Hungarian Monarchy. It sits offshore and is one of the largest lighthouses in Croatia, making it a strong photo subject from the water.

The planned sightseeing includes the lighthouse, but the actual route can vary. One outing did not reach Porer, and the passengers instead spent time cruising around an island before heading back to Medulin. Weather, sea conditions, and the captain’s judgment affect the route.

I would not book this tour solely for Porer. If seeing the lighthouse is essential, ask at check-in whether it is planned for that departure. If you are happy with a coastal cruise that may include the lighthouse, the uncertainty is less troublesome.

This flexibility is not necessarily poor organization. The captain has the final say when the sea is rough or the weather turns bad. The operator reserves the right to change the route or cancel for safety, with a refund or another tour date if the trip cannot run.

What the three-hour timing means

Three hours is the defining feature of this excursion. You have enough time for the boat ride, fish viewing, swimming, the cave, and some sightseeing, but not enough time for a leisurely full-day cruise.

I like the timing for several kinds of plans:

• You want a half-day activity rather than a full day on the water.
• Your children lose interest during long boat rides.
• You are staying in Medulin and want to avoid arranging transport to another port.
• You want swimming and a cave stop without committing to a larger excursion.
• You are fitting a boat trip around other Istrian sights.

The short format also limits what the crew can offer. You should not expect extended time at every island or a slow cruise around the whole Kamenjak coast. The boat needs to return to Medulin on schedule, so the route may feel brisk.

The experience ends back at the harbour, which keeps the logistics easy. There is no separate return transfer to arrange.

Meeting at Medulin Harbour

Plan to arrive 30 minutes before departure. At the meeting point, find the advertising desk shaped like a boat and the large dark blue parasol. A team member should be there to help you check in or answer questions.

Transportation to the boat is not included. You need to make your own way to Medulin Harbour, so allow extra time if you are coming from another town in Istria. The exact starting time depends on the date and availability.

Pack swimwear and a towel, even if your children are initially interested only in the glass floor. The swimming stop is a central part of the trip, and the Mermaid activity takes place in the water. Sunscreen, a camera, and drinking water are also recommended.

Food is not included, but drinks are. A small snack is sensible for families, particularly if you are booking a later departure or expect children to want food after swimming.

Who will enjoy this boat ride most

This excursion is best for families who want a light, playful outing with several short activities. The fish viewing gives children something to do on board, while the Mermaid and swimming stop add variety. The three-hour length is easier for young passengers than a long open-water excursion.

It also suits adults who want a quick look at the Medulin archipelago and Kamenjak without spending an entire day at sea. You can swim, see a cave, and possibly photograph Porer lighthouse, then return to town with much of the day still ahead.

I would be more cautious if you dislike boat motion or often feel seasick. The trip takes place on open water, and the activity information specifically excludes people prone to seasickness. Anyone with heart problems should also choose another outing.

This is not the right pick for a wheelchair user. It is also not ideal if you want serious snorkeling, a long visit inside a cave, extensive marine-life instruction, or a guaranteed lighthouse visit. Its strength is variety and ease, not depth.

Is the Medulin Mermaid tour worth booking?

Book it if you want a short, family-oriented boat trip with swimming, fish feeding, a cave, drinks, and a playful Mermaid encounter. The $34 price is reasonable when you value several simple activities in one outing and do not need a full-day cruise.

Before booking, set your expectations correctly. The lighthouse may not be included on your departure, the route can change, and one group felt the boat spent too much time simply cruising after the swimming stop. The crew may be warm and accommodating, but the excursion is more about family fun than detailed sightseeing.

I would choose this trip for a first taste of the Kamenjak coast, especially with children. I would skip it if Porer lighthouse is your main goal or if you want a substantial boat adventure. Check the sea forecast, arrive early at the dark blue parasol, and ask about the planned route before boarding.

FAQ

How long is the glass-bottom boat tour?

The tour lasts three hours and returns to Medulin Harbour.

Where does the boat leave from?

The departure point is Medulin Harbour. Check in 30 minutes before the scheduled start at the boat-shaped advertising desk beneath the large dark blue parasol.

Is swimming included?

Yes. Swimming and snorkeling in Nature Park Kamenjak are included, along with exploration of Golumber Cave.

Will the tour visit Porer lighthouse?

The sightseeing plan includes Porer lighthouse, built in 1846, but the route may change. The captain can alter the itinerary because of weather or sea conditions, and the lighthouse was not reached on at least one departure.

Are food and drinks included?

Drinks are included, but food is not. Bring a snack if you need one during or after the cruise.

Can wheelchair users or people prone to seasickness join?

The activity is not suitable for wheelchair users, people with heart problems, or people prone to seasickness.