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

Koločep’s Blue Cave is the star of this outing. You swim through a narrow entrance into glowing turquoise water, then spend the afternoon moving between sea caves, open water, and Šunj Beach’s soft sand. From the boat, Dubrovnik’s red roofs and medieval walls make a fine opening view.

I like the mix of active and easygoing stops. You get real swimming and snorkeling at Koločep, then a generous 90-minute beach break on Lopud. I also like the simple value: beer, wine, soft drinks, water, masks, snorkels, and floats are included.

The main catch is that this is a shared speedboat trip, and the caves can be crowded in summer. Strong swimmers will get the most from it, while anyone prone to seasickness or uneasy in open water should think twice.

Quick take on the Blue Cave speedboat trip

• The Blue Cave requires a swim through its entrance: You need basic swimming ability, but noodles and lifejackets are available.
• The Three Green Caves offer different levels of adventure: Two are broad and easy to explore, while one is a narrow swim-through passage.
• Šunj gives you a proper beach stop: You have about an hour and a half for swimming, sunbathing, food, or a drink beneath a beach umbrella.
• Drinks stay available throughout the outing: Expect local beer, white wine, water, iced tea, cola, and Fanta.
• The boat ride has a social, music-filled feel: Guides such as Ivan, Rino, Mario, and Dora are often praised for keeping the mood relaxed and fun.
• Weather can change the order or route: The captain may visit the green caves first, or adjust the stops when sea conditions are poor.

A half-day on the water from Dubrovnik

This tour is built for people who want to see more than Dubrovnik’s Old Town without giving up an entire day. It usually lasts four to five hours, with departures available from Dubrovnik Old Town, Cavtat, Mlini, and Srebreno depending on the option you choose.

The boat gets you away from the city quickly. The ride itself is part of the attraction, with open views of the Adriatic and the chance to see Dubrovnik from a completely different angle. The return route passes the Old Port and gives you another look at the city walls from sea level.

The group is shared rather than private. Reports place some boats at about 14 people, though the exact boat and group size can vary. That is small enough to feel more personal than a large ferry, but you should not expect a quiet private charter. Music, conversation, and the speedboat’s lively ride are part of the package.

Dubrovnik’s walls from the sea

Before the swimming begins, take time to look back toward Dubrovnik. The Old Town’s stone walls rise above the water, with the familiar terracotta roofs behind them. From a boat, the city looks more dramatic and less crowded than it does from the packed streets inside the walls.

This is not a formal sightseeing cruise with a long historical talk. The guides speak English, Croatian, Bosnian, and Serbian, and some guides provide information about the places you pass. The main purpose is still swimming, snorkeling, and island time, so keep your camera ready during the scenic stretches.

The ride from the starting point to the first cave takes about 25 minutes. On the return, the boat spends roughly 25 minutes heading back, followed by a slower scenic pass near the Old Port. Some guides play music on the way home, and the ride can become quite lively as the boat skips across the waves.

Swimming into Koločep’s Blue Cave

The Blue Cave on Koločep is the most unusual stop. You do not simply walk into it or view it from a boat. You enter by swimming through a narrow opening, then find yourself inside a darker chamber where sunlight filters through the water and creates the blue-green glow.

You get about 30 minutes here. That is enough for a swim, a look inside the cave, and some snorkeling, but it is not a long beach-style stop. The included masks and snorkels make it easier to see the water below you, and the crew also provides lifejackets and noodle floats.

The cave is beautiful, but the entrance requires care. Boats may be nearby, swimmers can gather around the opening, and waves can make the first few seconds awkward. One useful tip is to wait for clear instructions from the crew before entering the water, then keep aware of boat traffic and other swimmers.

You do not need to be an expert swimmer, but you must be able to enter the water, resurface, float, turn, and swim to safety. A lifejacket is a safety aid, not a substitute for swimming ability. If you are not comfortable in open water, this stop may feel more stressful than fun.

For confident swimmers, this is the strongest part of the trip. The cave gives you something a standard coastal cruise cannot: a short physical challenge followed by a striking natural sight.

The Three Green Caves and the swim-through passage

After about 10 minutes by speedboat, you reach the Three Green Caves, also on Koločep. You get another 30-minute stop, and the setup is useful because the three openings offer different ways to spend your time.

Two caves are wider and easier for relaxed swimming and snorkeling. The third is a narrow passage that takes you through the island and out the other side. It feels more like a small adventure than a photo stop, though you should only attempt it if you are comfortable in confined water.

This second stop helps balance the Blue Cave. At the first cave, the glowing light is the main attraction. At the green caves, you have more freedom to choose your level of activity. You can stay in open water, float with a noodle, snorkel near the rocks, or try the passage.

Cliff-jumping may also be possible around the caves, depending on conditions and crew guidance. Do not treat it as an automatic part of the tour. Sea conditions, boat traffic, and safety concerns can change what is sensible on the day.

The area can be busy in the high season. Several boats may arrive at the same time, so the caves will not feel like a private discovery. Still, the water is clear, and the setting gives you a good reason to get in rather than simply take pictures from the deck.

Šunj Beach gives the tour breathing room

After the caves, the boat travels about 15 minutes to Šunj Beach on Lopud. This is the longest stop, with around 90 minutes of free time. The beach is known for fine pale sand and shallow water that extends a long way from shore.

That shallow entry is helpful for families and anyone who prefers an easy swim. It also explains why the boat may anchor as close to the beach as conditions allow. You can disembark without a long swim, though the exact approach depends on the sea and boat position.

At Šunj, you can swim, lie on the sand, walk along the shore, or sit at one of the beach bars. The bars and related services generally operate from May onward. If you buy a drink at the beach bar with blue umbrellas, you receive a complimentary sunbed and umbrella. The drink is not free, so factor that cost into your beach plans.

Food is not included in the tour. The beach has choices to eat when its businesses are open, but you should not assume every café or service will be operating outside the main season. If your departure is from November through April, the beach stop may be replaced with time at Lopud village or Koločep village, depending on which cafés, restaurants, and shops are open.

The beach is a smart final stop. After two active cave visits, you can slow down before returning to Dubrovnik. It also gives less confident swimmers a way to enjoy the outing without spending every minute in open water.

Drinks, music, and the mood on board

The included drinks are one of the tour’s practical strengths. You can have local beer, white wine, water, iced tea, cola, or Fanta during the trip. After snorkeling, having something cold already on the boat is useful, and several guides make a point of offering drinks after each stop.

Do not expect a full meal or a bar service with an extensive menu. The selection is basic, but it covers the main needs of a four-hour outing. If you want lunch, bring your own plan or use the options at Šunj when they are open.

Music is also part of the experience. Guides including Ivan, Rino, Mario, Dora, Peter, Leo, and others are praised for creating an easygoing atmosphere. Some boats feel almost like a small floating party on the way back, with music and a bouncy ride.

That will suit you if you want a sociable afternoon. If you want quiet nature viewing, this may not be the right boat trip. Music volume can vary, and one account found it louder than ideal. The speedboat itself can also be lively on choppy water, so hold on and consider motion-sickness medication if you normally need it.

Is $71 a fair price?

At $71 per person, the value depends on how much use you make of the water stops. You are paying for a four to five-hour outing, speedboat transport, two cave visits, a beach stop, snorkeling equipment, and a range of drinks. Compared with arranging separate boat transport, equipment rental, and beach time, the package is reasonably strong.

The price is less attractive if you do not swim, skip the caves, or mainly want a ride along the coast. The tour is built around getting into the water, not simply sitting on a boat. You may also spend extra at Šunj for a sunbed, umbrella, food, or a beach drink.

The biggest value comes from the variety. In one half-day, you see Dubrovnik from offshore, visit two different cave areas, and reach one of the region’s best-known sandy beaches. It saves you from choosing between an island boat trip and a beach afternoon.

What to bring and what to expect on the day

Bring swimwear and a towel. A waterproof phone case is a sensible extra if you want pictures inside the cave, though no underwater photography equipment is included.

Wear something that will stay secure during a fast boat ride. Keep sunglasses, hats, and loose items protected, especially on the return when the boat may run over choppier water. Ask the crew about the toilet before departure. Toilets are usually available only at Šunj, although a boat with a toilet may sometimes be assigned.

The meeting point depends on the booking option. Departures can be arranged from the Old Town port, Cavtat, Mlini, or Srebreno, so check the exact location rather than assuming you will leave from Dubrovnik’s main harbor.

The captain can change the order of the stops based on weather and sunlight. For example, the green caves may come first and the Blue Cave second. This is a practical adjustment, not a failure of the tour, since light and sea conditions affect the cave experience.

Free cancellation is available up to 24 hours before departure, and you can reserve now and pay later. The activity has a reported rating of 4.8 from 502 ratings, while 87 percent of ratings gave the transport a perfect score. Those figures suggest strong satisfaction, but the conditions of the sea and the crowds at the caves still matter.

Who will enjoy this tour most

I would choose this trip if you want an active half-day with plenty of water time and a friendly boat atmosphere. It is particularly good for couples, families with confident swimmers, and friends who want a beach stop without arranging island transport themselves.

It also works well for a first visit to Dubrovnik. You see the city walls from a fresh angle, then get out to Koločep and Lopud without committing to a full-day excursion.

I would be cautious if you have back problems, are prone to seasickness, or are uncomfortable on fast boats. The operator lists the tour as unsuitable for wheelchair users, non-swimmers, people over 80, and people with back problems. Getting on and off a speedboat can require balance and help, even though the crew aims to assist.

The tour is not ideal for someone seeking solitude. Summer boats and swimmers can crowd the cave areas, especially at the Blue Cave. Go for the combination of scenery, swimming, music, and beach time, not for an empty-cove experience.

Should you book the Blue Cave and Šunj tour?

Book it if you want a well-packed four-hour escape from Dubrovnik with real swimming, clear water, a sandy beach, and drinks included. The Blue Cave and Three Green Caves give the trip its adventure, while Šunj keeps the day from becoming one long swim.

I would book an earlier departure if you have a choice and prefer calmer conditions or a less hectic feel. I would also ask about the exact meeting point, expected boat, toilet availability, and the season’s beach services before setting out.

Skip it if you cannot swim, strongly dislike speedboats, or want a quiet private cruise. For everyone else, the mix is hard to beat at this length: caves first, beach last, and Dubrovnik’s walls framing the ride home.

FAQ

How long does the Blue Cave speedboat tour last?

The tour lasts about four to five hours, depending on the departure option and sea conditions.

Where can I join the tour?

Departure options include Dubrovnik Old Town port, Cavtat, Mlini, and Srebreno. The exact meeting point depends on the option booked.

Is snorkeling equipment included?

Yes. Masks and snorkels are included, along with lifejackets and noodle floats for use when needed.

What drinks are included?

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

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.

Is lunch included?

No. Lunch is not included, though food may be available at Šunj Beach when its bars and restaurants are operating.

What happens at Šunj Beach?

You get about 90 minutes of free time for swimming, relaxing, or eating. A beachfront drink purchase at the blue-umbrella bar includes a sunbed and umbrella.

Can the itinerary change?

Yes. The captain may change the order or adjust the stops because of weather, sea conditions, or the position of the sun. From November through April, the Šunj stop may be replaced by Lopud village or Koločep village.