REVIEW · CAVE SNORKELING & SWIMMING
Full-Day Boat Trip, Cave Swim, lunch & Drinks – Medulin/Ceja
The best part of this Medulin boat trip is the underwater cave swim at Cape Kamenjak, where a crew member accompanies you into a sea cave at Istria’s southern tip. You also get sweeping views of Medulin Bay, a grilled lunch, and time to swim from Ceja Island.
I like the generous drinks policy, with wine, beer, sodas, water, and schnapps included, and I like the choice of fish, tuna steak, meat, or a vegetarian lunch. The main drawback is the long Ceja stop. Two to two and a half hours is perfect for sunbathers, but it may feel slow if you want constant sightseeing.
Key points at a glance
- Sea cave swim at Cape Kamenjak: A crew member goes with you for this unusual stop.
- Sandra is easy to spot: Look for the only red and yellow boat at Medulin Harbor, near berths 32 and 33.
- Lunch comes with real choice: Select tuna steak, fish, meat, or a vegetarian plate with cabbage salad and ciabatta.
- Drinks are included throughout: Wine, beer, cola, Fanta, water, and a welcome schnapps are part of the fare.
- Ceja Island gives you two hours in the water: There is also a restaurant and café bar, but the island accepts cash only.
- The price covers a lot: At $53 per person for five hours, the cruise, lunch, drinks, cave swim, and island stop make this a strong-value outing.
Setting Out From Medulin Harbor

You meet the boat at Osipovica 18 in Medulin, at the harbor near berths 32 and 33. The boat is called Sandra, and it is the only red and yellow boat in the area. A crew member waits beneath a red umbrella, which makes the meeting point easier to find than many harbor departures.
Arrive 30 to 45 minutes before departure. That may sound early for a casual boat ride, but it gives you time to find the boat, check in, and settle aboard without a last-minute dash along the waterfront.
The trip lasts five hours, so this is more than a quick harbor cruise. You should think of it as a relaxed mix of sightseeing, swimming, lunch, and time on an island. The pace is social and easygoing rather than tightly packed with one photo stop after another.
The guides speak Croatian, English, and German. Ilia and Najwa are part of the crew, and their friendly, attentive service has been a strong part of the experience. A live guide is available during the trip, but the focus is on enjoying the water rather than sitting through long talks.
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Wide Views Across Medulin Bay

The first part of the ride gives you a broad view of Medulin’s archipelago and the Premantura peninsula. From the boat, you see the coast in a way you cannot get from a town street or beach path. The water, small islands, and open horizon make this early cruise a useful introduction to the southern Istrian coast.
The sightseeing cruise lasts about 50 minutes. That is enough time to get comfortable, take photos, and enjoy the changing view before the more active part of the trip begins.
I would use this stretch to claim a good viewing spot, then keep your phone protected from spray. The boat trip is meant to be enjoyed outside, but sun and wind can catch you quickly on the water. Sunscreen is essential, even on a day that feels mild at the harbor.
Cape Kamenjak and the Underwater Cave

After roughly an hour, Sandra reaches Cape Kamenjak Nature Park, at the southernmost point of Istria. This is the dramatic section of the route, with rocky cliffs, open sea, and wildlife around the coast.
The special stop is an underwater cave. You enter the water and swim toward the cave with a crew member accompanying you. That added supervision matters, since the appeal is not simply looking at the cliffs from the boat. You get a short, active encounter with the coast itself.
Bring a swimsuit and towel, and bring your own snorkeling gear if you have it. The trip information specifically advises bringing snorkeling equipment, so you should not count on a full gear rental service being available. A waterproof phone case is also a sensible extra, though it is not listed as an included item.
The cave swim is not the best fit for someone who wants to stay dry or avoid open-water swimming. It is also worth remembering that the captain can cancel or reschedule if strong wind or poor weather makes the trip unsafe. That is a practical safety rule, not a minor detail, since conditions around the cape can affect both the boat ride and the swim.
Porer Lighthouse From the Water

After Cape Kamenjak, the boat continues toward Porer Lighthouse. The lighthouse sits on a small island and was built in 1846 during the Austro-Hungarian period.
You do not visit the lighthouse as a land stop. Instead, you see it during the cruise, which gives you a clear view of its isolated setting. This is a short sightseeing moment, but it adds a bit of historic character to a day otherwise focused on swimming and food.
The lighthouse also helps break up the active cave stop and the later island pause. Keep your camera ready, but do not expect a long guided visit or time to walk around the structure.
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Grilled Lunch Served Aboard Sandra

Lunch is served on the boat, either while stopped or while moving slowly. You can choose from tuna steak, fish, meat, or a vegetarian dish, with cabbage salad and ciabatta bread.
That range is useful for a mixed group. One person can order fish while another chooses meat or vegetables, without forcing everyone into the same menu. The lunch is simple rather than formal, which suits a boat day. You eat with the sea around you, not in a restaurant dining room.
The meal is one of the reasons the $53 price feels fair. A separate boat cruise, lunch, and drinks can add up quickly in a coastal resort area. Here, the food is part of the main fare, and the menu includes a proper hot grilled option rather than only snacks.
There is also unlimited drinks during the ride. The included selection covers red and white wine, beer, cola, Fanta, and water, plus a welcome drink or schnapps. If you do not drink alcohol, you still have soft drinks and water available. If you do drink, the package removes the usual worry about buying each beverage separately.
Use some restraint with alcohol, especially before the cave swim. The most enjoyable order is water first, lunch next, and alcoholic drinks at a relaxed pace after the active swimming.
Ceja Island Gives You Time to Slow Down

The final major stop is Ceja Island, where you have about two hours for swimming and sunbathing. This is not a rushed ten-minute photo stop. You have enough time to get into the water, dry off, sit in the sun, and settle into the quiet rhythm of an island break.
That generous pause is a strength if you want a restful afternoon. Families, couples, and anyone who likes unhurried swimming will appreciate not being called straight back to the boat.
It can also be the least exciting part for people who prefer movement and sightseeing. Some schedules allow two and a half hours on the island, and that may feel too long if you are not interested in sunbathing. You might want to bring a book, a hat, or something small to occupy you between swims.
Ceja has a restaurant and café bar if you want another snack, coffee, or drink. Bring cash, since the island is cash only. Your cruise drinks are already included, but cash gives you more freedom once you are ashore.
The water stop is also a good reason to pack your towel in an easy-to-reach place. Do not bury it under everything else you brought aboard. You will likely use it more than once, first after the cave swim and again after Ceja.
The Return Cruise to Medulin

After Ceja, Sandra makes the return trip to Medulin. The final sightseeing cruise lasts about 30 minutes, giving you a calm finish after lunch and swimming.
This is a good time to enjoy the view from the upper deck if space is available. The crew has been praised for attentive service there, and the upper deck gives you a pleasant place to watch the coastline pass. You may also want a light layer, since the ride back can feel cooler after you have been in the water.
The boat returns to Osipovica 18. Hotel pickup and drop-off are not included, so you need to make your own way to and from the Medulin harbor. Transfers may be arranged on request, but you should confirm that before booking if transport is important to your plans.
What the $53 Price Really Covers

At $53 per person, this is a good-value package for a five-hour outing. You are paying for:
- The boat cruise from Medulin
- Sightseeing around the archipelago and Premantura peninsula
- The Cape Kamenjak cave swim
- A view of Porer Lighthouse
- Grilled lunch with four main choices
- Drinks throughout the ride
- A swimming and sunbathing stop at Ceja Island
- Guide and crew service in Croatian, English, or German
The value is strongest for people who would otherwise buy lunch, drinks, and a separate boat excursion. The included beverages are not limited to one welcome drink, and the lunch has enough choice to suit different diets.
The price is less attractive if you mainly want a short scenic cruise. You spend much of the five hours either swimming, eating, or sitting on Ceja, so this is not a nonstop coastal sightseeing trip. You are paying for a full, easygoing outing rather than maximum sightseeing mileage.
Who Will Enjoy This Boat Trip Most

I would recommend it to you if you want several parts of a coastal day in one booking. The cave swim gives the trip a clear highlight, while the meal and Ceja stop keep the schedule from feeling like an athletic excursion.
It suits:
- Couples looking for a relaxed day on the Adriatic
- Families who want swimming plus a meal
- Small groups with different food preferences
- Visitors staying in Medulin or nearby Premantura
- Anyone who likes an open boat, island time, and included drinks
- People who want a good-value alternative to arranging several separate activities
You should think twice if you dislike swimming, need a tightly timed sightseeing program, or become restless during long beach stops. The cave swim is optional in spirit, but it is central to the character of the trip. The Ceja pause is also long enough to shape the whole afternoon.
The experience is listed as wheelchair accessible, but swimming access and movement around a boat can still depend on the day’s conditions and the exact assistance required. If that matters to you, ask the operator for practical details before booking.
Practical Packing Advice for Cape Kamenjak

Bring swimwear, a towel, sunscreen, and snorkeling gear if you have it. Wear sunscreen before departure and reapply during the day, since you will spend time on open water and at Ceja.
I would also pack:
- A dry bag or waterproof pouch for your phone and wallet
- Cash for Ceja’s restaurant or café bar
- A hat and sunglasses
- A light layer for the return cruise
- Comfortable clothing that dries easily
Do not bring valuables you do not need. You will move between the boat, the water, and the island, and keeping your belongings simple makes the day easier.
Arrive at least 30 to 45 minutes early. Find the red and yellow Sandra, then look for the red umbrella and the crew near berths 32 and 33. If you cannot locate the team, use the local operator’s phone number provided with your booking.
Weather Can Change the Whole Plan
The captain decides if the boat can safely operate in bad weather or strong wind. If conditions are not suitable, the trip can be canceled and rescheduled.
That policy is especially important here because the route includes an open-water cruise and a cave swim. A sunny morning in Medulin does not guarantee calm conditions at Cape Kamenjak. Keep some flexibility in your schedule, particularly if you are booking close to the end of your stay.
You can cancel up to 24 hours in advance for a full refund, and the reserve-now, pay-later option lets you hold a place without paying at once. Those terms are useful when the weather forecast is uncertain, though they do not remove the need to check the operator’s instructions.
Should You Book the Medulin Cave Swim Cruise?
Book this trip if you want good value, a memorable swim, and an easy lunch-on-the-water day. The cave at Cape Kamenjak is the distinctive feature, and the combination of grilled food and unlimited drinks gives the five-hour schedule more substance than a basic sightseeing cruise.
I would skip it if you want nonstop movement or a short excursion with many coastal stops. The Ceja break is deliberately long, and that will either feel wonderfully lazy or slightly excessive, depending on your idea of a good beach day.
For most visitors based in Medulin, the balance works well: scenic cruising, a supervised cave swim, Porer Lighthouse, a choice of lunch, and time in the Adriatic, all for $53. Pack for the water, carry cash for Ceja, arrive early, and let the captain’s weather call guide your plans.
FAQ
Where does the boat trip start?
It starts at Osipovica 18 in Medulin Harbor. Look for the red and yellow boat called Sandra near berths 32 and 33, with the crew waiting under a red umbrella.
How long does the experience last?
The boat trip lasts five hours. It includes the cruise from Medulin, the Cape Kamenjak cave swim, Porer Lighthouse sightseeing, lunch, time at Ceja Island, and the return cruise.
What food choices are available for lunch?
You can choose tuna steak, fish, meat, or a vegetarian dish. Lunch also includes cabbage salad and ciabatta bread.
Are drinks included?
Yes. Drinks during the ride include red and white wine, beer, cola, Fanta, and water. A welcome drink or schnapps is also included.
What should I bring?
Bring swimwear, a towel, sunscreen, and snorkeling gear if you have it. Carry cash if you plan to buy anything at Ceja, since the island is cash only.
What happens if the weather is bad?
The captain decides if conditions are safe. Strong wind or bad weather can lead to cancellation and rescheduling. You can also cancel up to 24 hours before departure for a full refund.
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