Blue cave, Mamula island, Submarine tunnels and Our lady of the Rocks (3h)

The Blue Cave is the star here: a short, bright-blue world reached by speedboat, with two low cave entrances and time to swim nearby. The ride also brings you past old fishing villages, Mamula Island, submarine tunnels, and the remarkable man-made island of Our Lady of the Rocks.

I like the way this trip packs several major sights into three hours, and I like the skilled boat handling praised by many passengers, including captains such as Andrej. The price is friendly for a boat outing, but the route is long and fast, and rough water, boat traffic, or a rushed cave visit can affect the experience.

Key points

• The Blue Cave takes about 20 minutes: You get time for photos and swimming, but not a long, quiet stay.
• The boat ride is part of the attraction: Expect roughly 50 to 70 minutes each way across Kotor Bay and toward the open sea.
• Swimming is from the boat: There is no promise of a sandy beach, and deep water may be tiring if you are not a strong swimmer.
• Our Lady of the Rocks costs extra: The church entrance is €1.50, while the islet itself is part of the tour.
• The route is full but tightly timed: Mamula and the submarine tunnels are quick photo stops rather than extended visits.
• Weather matters: Rain and rough water can change the outing, with a new date or refund offered if the operator cancels.

A fast route from Kotor to the Adriatic

This is a sightseeing trip with a swimming break, not a slow cruise. You board near Kotor and head out across the Bay of Kotor, trading the old harbor for steep shores, green hills, stone villages, and wide views over the water.

The journey to the Blue Cave takes about 1 hour and 10 minutes in the stated schedule. Some passengers describe the ride as closer to 50 minutes, so allow for variation caused by sea conditions, the exact departure point, and the boat’s route.

That long first leg matters. You are not simply being carried between nearby attractions. You are paying for a speedy run through one of Montenegro’s most scenic stretches of coast, but you should be comfortable sitting on a small boat for a good part of the morning or afternoon.

The boat ride can be bumpy, especially at the front. Several passengers enjoyed the waves and the speed, while others found the water rough. If you want the smoothest ride, ask where to sit and consider choosing a middle seat rather than the bow.

Kotor Bay villages and wide water views

The opening stretch passes old fishing villages, thick vegetation, and a mix of natural and historic sights. This is one of the best parts of the trip for simply looking outward. Keep your camera ready, but also give yourself time to watch the shoreline change as the bay opens toward the sea.

The speedboat gives you a different view from a walking tour in Kotor. You see the settlement pattern from the water, with small communities tucked along the shore and hills rising behind them. The views are especially strong on a clear day, when the water and surrounding peaks create a dramatic setting.

Guiding quality can vary by captain. Captains praised in the booking feedback, including Andrej, were described as friendly, informative, and willing to stop for photos. Other accounts describe fast or recorded explanations that were hard to follow. If the historical commentary matters to you, ask questions early and sit where you can hear clearly.

The Blue Cave: bright water and a short swim

After the long ride, the boat reaches the Blue Cave, which has two entrances. One is wide but low, while the other is narrow and tall. The boat enters through the opening when conditions and traffic allow, giving you a close look at the blue glow inside.

The color comes from sunlight passing through the water and reflecting across the cave walls. It is a photo-friendly stop, but keep your expectations sensible. This is a popular place, and other boats may be waiting or maneuvering nearby.

The stated stop lasts about 20 minutes. That time may include entering the cave, taking pictures, and getting into the water. Some departures also stop at a nearby cove for swimming. The precise swimming location can change, and at least one account describes swimming from the boat in deep water rather than from a beach.

That point is important. If you cannot swim confidently, tell the crew before entering the water and ask about safety equipment. One account praised the captain’s care in rough conditions, while another described an unpleasant disagreement over the use of a life jacket. Service can depend heavily on the crew and the conditions that day.

If you bring a phone, use a waterproof case. You will want photos, but the combination of spray, swimming, and a moving boat makes ordinary handling risky. Bottled water is provided, but food and other drinks are not.

Mamula Island and the submarine tunnels

Mamula, also called Lastavica, is an uninhabited circular islet at the entrance to the Bay of Kotor. It lies between the Prevlaka and Luštica peninsulas, about 6.3 kilometers from Herceg Novi, and measures roughly 200 meters across.

The island is known for its fortified past and stark setting. From the water, you get a quick look at the round island and its stone fortifications. Do not expect a long land visit here. Mamula is part of the scenic route, with the boat providing the main viewpoint.

The submarine tunnels add another unusual sight. These narrow coastal shelters were built into the shore so submarines could hide from view. The boat takes you close to the dark openings, giving you a memorable look at a piece of military infrastructure that is easy to miss from land.

Both Mamula and the tunnels are brief stops. They work well for passengers who want variety, but less so if you prefer to explore one place at length. The boat keeps moving, and the three-hour schedule leaves little room for delays.

Our Lady of the Rocks and Perast’s floating chapel

Our Lady of the Rocks is one of the two small islets off Perast. Unlike a natural island, it was built up over time by placing rocks in the water and sinking old, seized ships loaded with stone.

The Roman Catholic Church of Our Lady of the Rocks is the largest building on the islet. A museum is attached, and there is a small gift shop near the church. A navigation light marks the western end.

You get about 20 minutes here. That is enough to walk around the islet and decide if you want to enter the church, but it is not enough for an unhurried museum visit. The church entrance costs €1.50 and is not included in the tour price.

I consider this stop worthwhile even if you skip the church. The artificial island itself is unusual, and the view back toward Perast and the surrounding bay gives the trip a strong final chapter. If you want the interior, bring a small amount of cash in euros and keep an eye on the clock.

What $42.41 really buys you

At $42.41 per person, this is an inexpensive way to see several coastal sights without arranging separate boat rides. Bottled water is included, and the main boat transport, Blue Cave visit, Mamula pass, submarine tunnel stop, and Our Lady of the Rocks visit are covered.

The value comes from the range. In three hours, you get a long scenic ride, a cave, a swimming opportunity, military tunnels, an island fortress, and a famous church island. A private charter would cost much more, so this shared trip works well if you want a compact introduction to the coast.

The trade-off is time. You are covering a lot of water, and each stop is short. The Blue Cave may feel rushed if several boats arrive together, while Our Lady of the Rocks allows only a quick visit. You are buying access and variety rather than depth.

The group limit is listed as 20 people, though accounts describe boats carrying around 8 or 9 people on some departures and a reported 13 on another. Since comfort and safety depend on the boat size and load, ask the operator about the expected boat and passenger count if that is important to you.

Speed, safety, and comfort on the water

The boat is a speedboat, and the pace is a central part of the outing. Many passengers liked the lively ride, the music, and the captains’ ability to handle waves smoothly. Others found the trip too bumpy or felt that explanations were too quick.

The front seats offer the strongest sense of speed and the biggest spray. They also take more impact when the boat meets a wave. If you have back trouble, motion sensitivity, or young children, ask for a steadier position.

Swimming access can involve a ladder. One account describes difficulty climbing back aboard after getting into the water and receiving little help. For that reason, wear secure footwear, use caution on wet surfaces, and do not enter the water unless you are comfortable getting back onto the boat.

The crew’s attitude also matters. Most accounts describe friendly, considerate operators who helped with photos, rain gear, and local explanations. One account describes rude handling of a safety request, so I would treat the captain’s instructions seriously and raise any concern calmly before the swim begins.

Who will enjoy this three-hour outing

I would choose this tour if you have limited time in Kotor, especially if you arrive by cruise ship and want to see beyond the old town. The meeting point is close to the cruise tender area, though finding the exact pickup spot may take a little care.

It suits active couples, families with older children, and anyone who likes a quick boat ride with several photo stops. Teenagers are likely to enjoy the speed and swimming more than a long museum visit.

It is less suitable if you want a quiet, slow cruise, a guaranteed beach swim, or extended time inside the Blue Cave and church. Non-swimmers can still enjoy the scenery, but you should not feel pressured to enter deep water.

English is the offered language. Most people can participate, and the activity is near public transportation. Confirmation is sent at booking, and the tour returns to the original meeting point.

Weather, timing, and what to bring

The experience depends on good weather. Rain or rough water can make the ride less comfortable, and the operator may change the plan. If poor weather forces cancellation, you are offered another date or a full refund.

Wear clothes that can handle spray and bring sun protection. A waterproof phone pouch is useful for the cave and swimming stop. Pack any food you need because meals and drinks beyond the provided water are not included.

A cancellation made at least 24 hours before the local start time qualifies for a full refund. Changes or cancellations inside that window are not accepted for a refund, so check the weather and your port schedule before the deadline.

The tour is commonly booked about three weeks ahead, with an average of 21 days. That is useful planning information for cruise passengers and summer visitors, when boat departures can fill.

Should you book the Blue Cave and Our Lady of the Rocks tour?

I would book it if your priority is maximum scenery in minimum time. The combination of a fast ride, Blue Cave, swimming, Mamula, submarine tunnels, and Our Lady of the Rocks offers good value at $42.41.

I would skip it if rough water makes you uneasy or if you want long visits at each site. Before paying, ask about the expected passenger count, swimming location, life-jacket rules, and the day’s sea conditions.

For most people with only a few hours in Kotor, this is a lively and affordable introduction to the bay. Go expecting a packed boat schedule, not a relaxed beach day, and you are more likely to enjoy what the trip does best.

FAQ

How long does the tour last?

The experience lasts approximately three hours.

What is the price?

The listed price is $42.41 per person.

What is included?

Bottled water is included. Food and other drinks are not included.

Does the church at Our Lady of the Rocks cost extra?

Yes. Entry to the church costs €1.50 and is not included in the tour price.

Where does the tour begin?

The meeting point is CQG9+H6W, Kotor, Montenegro.

Where does the tour end?

The activity ends back at the original meeting point.

Is the tour offered in English?

Yes. English is the offered language.

How many people can join?

The stated maximum is 20 people.

What happens if the weather is poor?

The experience requires good weather. If it is canceled because of poor conditions, you are offered a different date or a full refund.