From Dubrovnik/Cavtat: Blue Cave, Sunj Beach Speed Boat Tour

The best part of this small-group speedboat tour is the mix of quick thrills and easy beach time. You’ll race out from Dubrovnik, look back at the city walls from the Adriatic, swim into glowing caves on Koločep, then finish on broad, sandy Šunj Beach on Lopud.

I like the generous drink service, with local beer, white wine, water, cola, Fanta, and iced tea ready after a swim. I also like the guides’ easygoing style. Ivan, Rino, Mario, Dora, and others are often praised for good music, friendly help, and keeping the group in a good mood.

The main drawback is shared with most popular cave trips: the caves can be crowded, especially in summer. You’ll also need basic swimming ability, and the speedboat ride can feel rough if you are prone to seasickness.

Key points to know before booking

• The Blue Cave is reached by swimming: You enter through a narrow opening, so you need to be comfortable in open water.
• Three Green Caves offer different levels of adventure: Two are broad and easy to explore, while the third is a narrow swim-through passage.
• Šunj gives you a proper sandy beach stop: You get about 90 minutes for swimming, lunch, or a slow drink under an umbrella.
• Drinks are included throughout the outing: Beer, white wine, soft drinks, iced tea, and water are supplied on the boat.
• The mood is lively rather than formal: Guides often play music, serve drinks, and create a relaxed party feel on the return ride.
• The route can change with weather: The captain may visit the green caves before the Blue Cave, or adjust the final stop in the cooler months.

Why this half-day boat trip works so well

Dubrovnik is best seen from several angles. On land, the Old Town walls feel massive and defensive. From the water, they rise above the red roofs in one long sweep, with the Adriatic opening around them. This tour gives you that view early, before the swimming begins, and returns along the coast with another chance to take it in.

The trip lasts about four to five hours, which is a useful length. You get a real outing without giving up an entire day of your holiday. The plan is simple: about 25 minutes by speedboat to Koločep, 30 minutes at the Blue Cave, 10 minutes to the Three Green Caves, 15 minutes to Šunj Beach, about 90 minutes on shore, and roughly 25 minutes back.

That timing gives the trip a good rhythm. You are not stuck at sea for hours, yet each stop has enough time for a swim. The boat ride is part of the fun, but the caves and beach remain the main event.

The tour is shared, not private. Group size varies, though one group described a boat carrying no more than 14 people as a comfortable fit. Expect a social outing, with music and drinks, rather than a quiet sailing lesson or a detailed historical tour.

Leaving Dubrovnik with the city walls behind you

Departures are offered from Dubrovnik Old Town port, Cavtat, Mlini, and Srebreno, depending on the option you book. The meeting point can vary, so check the exact departure instructions rather than assuming every boat leaves from the same pier.

Once clear of the harbor, the speedboat gives you a fast look at Dubrovnik’s shoreline. Sit where you can see back toward the Old Town, especially if the captain slows for the coastal view. The fortifications, towers, and orange roofs make a far stronger picture from sea level than from another street inside the city.

The return trip may be more energetic. Music is often played on board, and the ride can bounce across the waves. Hold onto your hat and anything loose. This is a speedboat, not a smooth glass-bottom cruise.

If you get motion sick, consider bringing medication that you already know works for you. One part of the trip can be calm and another can be choppy, with little warning. The operator does not recommend this outing for people prone to seasickness or those with serious back problems.

Swimming into Koločep’s Blue Cave

The first major stop is Koločep’s Blue Cave. The name refers to the light inside, where sunlight reflects through the sea and gives the cave a blue-green glow. The effect is strongest when the light and sea conditions cooperate, so the exact appearance can vary.

You do not normally enter by walking in. You swim through a narrow entrance, using the included mask and snorkel if you want a better view below the surface. The boat crew can provide lifejackets and noodle floaters, but these are safety aids, not a replacement for swimming skills.

This is the stop that requires the most confidence. You should be able to enter the water, resurface, float, turn, and swim to safety. If you are a weak swimmer, ask the crew about a lifejacket or noodle before getting in, rather than waiting until you are in the water.

Inside, the cave is more about light, water, and the feeling of passing through a natural opening than about a long visit on land. You will have around 30 minutes, enough for a swim and some time to look around, but not enough for everyone to linger indefinitely.

Cliff-jumping may be possible from the surrounding rocks for people who want more action. It depends on conditions and your comfort level. Never treat it as a required part of the tour. The cave swim itself is the main reason to stop here.

Summer crowds are the biggest issue. Other boats may arrive at the same time, and the narrow entrance can feel busy. Be alert for moving boats and follow the crew’s instructions when entering and leaving the water. Going early in the day may help, though the captain controls the schedule and may reverse the cave order because of weather or the sun’s position.

Choosing your route through the Three Green Caves

After a short ride, the boat reaches the Three Green Caves, also on Koločep. The stop lasts about 30 minutes and gives you more room to choose your own level of adventure.

Two caves are wide and fairly easy for swimming and snorkeling. The third has a narrow passage that lets you swim through the island and come out on the opposite side. That passage is the more exciting option, but it is not for anyone who dislikes confined spaces or feels unsure in the water.

I like this stop because it gives the group choices. You can float near the boat, explore a broad cave, or attempt the swim-through. It is not an all-or-nothing activity. The crew also supplies snorkeling equipment and floaters, so you do not need to pack your own gear.

The water around Dubrovnik is famously clear, and that matters here. You can see the rock formations below the surface more easily than you might in a crowded harbor. Still, this is a popular route. The caves may have several boats and swimmers around them during the busiest summer hours.

A useful tip: bring a waterproof phone case if you want photographs inside the caves. A normal phone is not worth risking for a quick picture. Also, keep your belongings secure on the boat while you swim. The supplied information does not promise a dedicated locker or dry storage.

Šunj Beach gives the tour a welcome change of pace

After the cave stops, the speedboat heads to Šunj Beach on Lopud. This is the most relaxed part of the day, and for many people it is the best counterpoint to the cave swimming.

Šunj is a long sandy beach, roughly one kilometer in length, with fine pale sand and shallow turquoise water. The sea stays shallow for almost 100 meters from shore, which makes it easier to wade and swim without immediately stepping into deep water.

The boat anchors as close to shore as conditions allow, but you may still need to walk through shallow water to reach the beach. Bring a towel and wear swimwear that makes this easy. The stop lasts about an hour and a half, enough time to dry off, swim, find food, or simply sit in the sand.

Beach bars operate from May onward. If you buy a drink at the beachfront bar with the blue umbrellas, you can receive a complimentary sunbed and umbrella. This is not an entirely free beach-chair service, since the purchase is required, and one price noted by a group was about €15 for a drink. Ask before ordering so you know the current arrangement.

Lunch is not included. Šunj is the place to buy food if you need a meal, but the activity information does not specify a set lunch option or menu. Pack a small snack if you tend to get hungry after swimming, while keeping in mind that food storage on the boat may be limited.

The beach can be lively in summer, but it generally feels less compressed than the cave stops. If you prefer a quiet, empty strand, this is not that kind of beach. If you want sand, shallow water, and a simple place to spend an hour, it fits the bill.

From November through April, Šunj’s bars and beach services may not be operating, and the sea may be too cold for a normal beach stop. The route then shifts to Lopud village or Koločep village, depending on the day and which cafés, restaurants, and shops are open.

Drinks, music, and the style of the crew

The included refreshments add real value to this outing. You can expect local beer, white wine, water, iced tea, cola, and Fanta. After swimming in salt water, having a cold drink already on board is more useful than it sounds.

Several guides receive especially warm praise for their handling of the day. Ivan is often singled out for his humor, music, steady driving, and attention to drinks. Rino is described as friendly and helpful, while Mario and Dora are noted for their easy manner. The individual guide depends on the departure, so do not book solely to meet one named person.

The atmosphere is casual. Music is part of the package, and the ride home can turn into a small boat party. One person found the music a little loud, so this is worth knowing if you want a quiet, nature-focused trip.

You should also expect basic information rather than a full coastal history lecture. The drivers speak English, Croatian, Bosnian, and Serbian, and they provide information about places along the route. The focus, though, is swimming, scenery, and a good time on the water.

Is $71 a fair price?

At $71 per person, the value depends on how much you would otherwise spend arranging these stops yourself. The price includes the speedboat, snorkeling equipment, the cave visits, the beach stop, and a useful range of drinks. It also saves you from coordinating separate boat rides and island transport.

For a four to five-hour outing, I consider that a reasonable price if you want an active half-day with several stops. The drinks help, especially because a private boat or separately arranged cave transfer could cost much more. On the other hand, one person felt the price was high for the total duration, and that is fair if you mainly want a long beach afternoon.

The tour is strongest for people who want variety. You are paying for movement between locations, not for hours at one beach. If you dislike changing places or want a private, quiet boat, another option may suit you better.

Who should book, and who should skip it

I would choose this tour for couples, families with older children, and friends who enjoy swimming and a lively boat ride. It works especially well as a first water-based outing in Dubrovnik because you see the city from offshore, visit two cave areas, and reach one of the region’s better-known sandy beaches.

Basic swimming skills are required. Non-swimmers should not book, even though lifejackets and noodle floaters are available. The activity is also not suitable for wheelchair users, people with back problems, or people over 80 according to the stated restrictions.

Getting on and off the boat can be difficult if you have a disability or limited mobility. One person with a disability received helpful assistance, but the boat and water entry remain practical concerns. Contact the operator before booking if this applies to you.

Take swimwear, a towel, sun protection, and a waterproof phone case if you want cave photographs. Keep your expectations realistic: the Blue Cave and green caves are beautiful, but they are not private in high season. Weather can change the order or route, and the captain has the final say for safety.

The tour offers free cancellation up to 24 hours before departure and a reserve-now, pay-later option. Starting times depend on availability, and pickup or drop-off may be arranged from Dubrovnik, Cavtat, Mlini, or Srebreno.

Should you book the Blue Cave and Šunj Beach tour?

Book it if you want a fun, active half-day with clear water, cave swims, a sandy beach, and drinks included. The combination is hard to beat for variety, and the guides’ friendly style adds to the appeal.

Skip it if you are a non-swimmer, get seasick easily, need a quiet boat, or want a private experience. For everyone else, $71 is a solid price for a well-packed outing, particularly if you value the equipment, refreshments, and simple transport between Dubrovnik’s nearby islands.

FAQ

Where does the tour depart from?

Depending on the option booked, departures are available from Dubrovnik Old Town port, Cavtat, Mlini, and Srebreno. The exact meeting point may vary, so check your booking details.

How long does the speedboat tour last?

The tour lasts about four to five hours, including the boat rides, cave stops, the beach visit, and the return along Dubrovnik’s coast.

Is the tour private?

No. This is a shared small-group speedboat tour, not a private charter.

Is snorkeling equipment included?

Yes. Masks and snorkels are included, and lifejackets and noodle floaters are available for use.

What drinks are included?

The boat supplies local beer, white wine, water, iced tea, cola, and Fanta.

Is lunch included?

No. Lunch is not included. You can buy food at Šunj Beach when the beach services are operating.

Do I need to know how to swim?

Yes. Basic swimming ability is required. You must be able to enter the water, resurface, float, turn, and swim to safety. Lifejackets do not replace swimming ability.

Can I visit the Blue Cave if I do not want to swim inside?

The Blue Cave is accessed by swimming through its narrow entrance. If you are not comfortable swimming, speak with the crew before entering the water.

Are Šunj Beach bars open all year?

No. Šunj Beach bars and services begin operating in May. From November to April, the stop may change to Lopud village or Koločep village, depending on open cafés, restaurants, and shops.

Can the itinerary change?

Yes. The captain may change the order or route because of bad weather or the position of the sun. The first stop may be the Three Green Caves instead of the Blue Cave.