The Blue Cave, also known as Modra Špilja or Blue Grotto, is a water-logged sea cave located in the small bay of Balun, on the Croatian island of Biševo.
Why is it called the Blue Cave?
It’s called the Blue Cave because of the ethereal blue light that appears inside it. This happens when sunlight enters through an underwater opening and the combination of refraction and reflection off the white limestone bottom creates a mesmerizing blue glow.
Are there 2 blue caves in Croatia?
There are more than two blue caves in Croatia. And there are even more different color-named caves. Here is a quick list:
- Blue Cave Bisevo (Modra Špilja Biševo),
- Blue Cave Kolocep (Koločep),
- Small Blue Cave Cvatat,
- Green Cave Vis,
- Three Green Caves Kolocep (Koločep).
When is the best time to visit the Blue Cave?
The best time to visit the Blue Cave is between 10 AM and 13 PM when the sunlight best penetrates the underwater opening, creating the most vibrant blue light.
Is it safe to swim in the Blue Cave?
Swimming is not allowed in the Blue Cave to preserve the cave’s delicate ecosystem and to ensure safety as the cave can get crowded with visitors.
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Can I take photos in the Blue Cave?
Yes, you can take photos in the Blue Cave. Due to the low light, you might want to use a camera with good low-light performance or adjust your camera settings accordingly.
How big is the Blue Cave?
The Blue Cave is 24 meters long, 10-12 meters deep, and around 15 meters tall.
How was the Blue Cave discovered?
The Blue Cave was known to local fishermen for centuries, but it gained broader recognition after Baron Eugen von Ransonnet described it in 1884. He also suggested creating an entrance above the water level for boats, which was done shortly thereafter.
Are there other caves near the Blue Cave?
Yes, there are several other caves near the Blue Cave. There is the Monk Seal Cave (Medvidina Špilja) on the same island, Bisevo, and the Green Cave (Zelena Špilja) on the island of Ravnik next to the island of Vis.
Is there any wildlife in the Blue Cave?
The grotto is not a prime spot for wildlife due to its popularity with tourists. There are occasional sightings of dolphins near the cave and incredibly rare sightings of the Mediterranean monk seals. However, there are various species of fish to be seen.
Can I explore the Blue Cave on my own?
To preserve the cave’s natural condition and ensure the safety of visitors, exploring the Blue Cave on your own is not allowed. You can visit with an authorized tour.
How long does a typical visit to the Blue Cave last?
A typical visit to the Blue Cave lasts about 15 minutes, not including travel time to and from the cave.
Is the Blue Cave open year-round?
The Blue Cave is generally open from April through October, depending on the weather conditions. It’s best to check with local tour operators for exact dates.
Can children visit the Blue Cave?
Yes, children can visit the Blue Cave, but due to the nature of the boat ride, it may not be suitable for very young children or those who get easily seasick. 3 years is the average minimum age for most tours.
Is there an entrance fee to visit the Blue Cave?
Yes, there is an entrance fee to visit the Blue Cave. The fee is often included in the price of the boat tour. If you are without a tour a ticket is €13, with a Blue Cave tour the ticket is often (not always) accounted in the price.
What makes the Blue Cave unique?
What makes the Blue Cave unique is its stunning blue light phenomenon, which creates an otherworldly atmosphere inside the cave.
Is the Blue Cave a protected area?
Yes, the Blue Cave is a protected natural monument under Croatian law due to its geological and touristic value.
Can I rent a private boat to visit the Blue Cave?
Yes, you can rent a private boat to visit the Blue Cave, but remember you can’t enter the cave without an authorized guide for safety and preservation reasons.