The Blue Cave is a unique natural phenomena located on the island of Biševo in Dalmatia, Croatia. It is known for its glowing, mesmerizing blue light that appears at certain times of day. The cave was formed by the wave action of the sea and measures 24 meters long and 11 meters deep. The entrance to the cave is 1.5 meters high and 2.5 meters wide. The ideal time to visit the cave is between 11:00 am and 12:00 pm, when the sunlight reflects off the white floor of the cave and bathes it in aquamarine light. The Blue Cave receives over 10,000 tourist visits each year.
To visit the Blue Cave from Split or any nearby town, the best option is to take a speedboat tour. The tour will stop at a small bay near the cave and guests will wait their turn to enter using a numbered system. There is also a cafe near the ticket office where visitors can grab a coffee while they wait. Once inside the cave, visitors are encouraged to take photos or videos to capture the unique beauty of the cave. The tour may also include a visit to the Green Cave, which is larger in size and appears to be of an emerald-green tone due to a similar light effect.