With its startling blue light and luminescent waters, it's easy to see how the Blue Cave earned its name. The natural wonder is hidden in the sea cliffs along the coast of Bisevo Island and is made even more enticing by its remote, difficult-to-reach location. The effort is rewarded with stunning scenery and endless photo opportunities.
The only way to explore the Blue Cave is by boat, and the most convenient way to visit is as part of a guided tour of the surrounding islands. Full-day speedboat tours leave from Split, Trogir, and Hvar, and often take in the five islands of Vis, Hvar, Bisevo, Ravnik, and Budikovac, stopping at attractions such as Stiniva Cove, Smokova Bay's beach, and the Green Cave. For a more personalized experience, opt for a private or small-group tour.
Things to Know Before You Go
To help protect the natural environment, only official boats are allowed in the Blue Cave, and boat tours inside are limited to 15 minutes.
Swimming in the Blue Cave is prohibited but most tours offer a chance to swim or snorkel at other locations, so be sure to bring your swimsuit, towel, and sun protection.
Many tours are suitable for wheelchair users, but it's best to check in advance.
How to Get There
The Blue Grotto is located in Balun Bay on the Croatian island of Bisevo along the Adriatic Coast. The only way to reach the island is by small boat from the island of Vis. From Split, it's roughly a 2.5-hour journey by speedboat to Vis, followed by a short transfer to Komiza on the island's west coast, which is the departure point for official Bisevo boats.
When to Get There
Weather permitting, it's possible to visit the Blue Cave year-round, but the most popular time is during the summer months of June to September. Visiting in high season means you will likely have a wait time of up to an hour to enter the cave. Low season visitors will probably be able to head straight inside, although fewer choices for tours and boat departures are available at this time of year. For the most spectacular views and photographs, plan your trip between 11am and 12pm, when the sunlight hits the water at just the right angle.
The Natural Phenomenon of the Blue Cave
One of 26 natural caves dotted around Bisevo island, the Blue Cave was accessible only to divers until 1884, when an artificial opening was created to allow small boats to cruise through. At certain times of the day, the mesmerizing light, created by sunlight refracting through the water and bouncing off the white limestone floor, appears to coat the entire cave in iridescent blue.