The unique beauty of the cave comes from the deep blue water. Sunlight shines in from the cave entrance, which was formed by the erosion of seawater, and reflects on the white sand at the bottom of the sea, creating a shimmering blue seawater color, the whole cave seems to be dyed in a mysterious blue color. This is also the reason it is called by this unique name.
At a fixed time around 11-12 noon, the sunlight shines down on the water, casting shimmering turquoise rays of light onto the cave ceiling, making all boats and tourists covered in that beautiful blue light, creating a magical scene.
The crater is 9m below the surface of the waves and reaches a depth of 35m, making it easier for divers to dive. The rich underwater world includes marine life, sponges, corals, etc., making it one of the top diving spots in Croatia.
There are actually quite a few caves around the island but the most famous is the Blue Cave. It was discovered in 1884.
Only boats are allowed to drift into the cave, motorboats must turn off their engines before entering the cave to keep the silence and fresh air inside.
Ngoc Anh (According to LonelyPlanet)
