Why is Blue Cave blue?

This cerulean oasis is so unique because it is formed due to seawater eroding limestone, a rock Biševo island is wholly composed of. Thanks to the sunlight's reflection off of the white seabed, which creeps through the opening of a vault at the top of the cave, a mesmerizing blue hue fills its capacity.



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This hole filters sunlight from outside of the cave and combines with the entrance light to illuminate the sea waters which gives it its glowing effect. The waters natural colour is already a pristine sapphire colour which contrasts against the caves dark, rugged walls and adds to the grottos radiance.

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The Blue Grotto lets you dive down to a depth of 100 feet (30 meters) in crystal clear water all the way down at a water temperature of 72 degrees Fahrenheit (23 degrees Celsius) all year round.

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The island of Capri is riddled with caves and grottos, and the Blue Grotto was not a mystery to locals. Known locally as Gradola, it had been avoided as it was said to be inhabited by monsters or evil spirits. The Blue Grotto is 60 meters long by 25 meters wide. The clear blue waters below the boat are 150 meters deep.

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Can visitors swim in the Blue Grotto Capri? No, visitors can neither enter the cave by swimming nor disembark from their rowboat to swim inside the cave. However, after the cave closes to the public at 5:30 p.m. (when the rowboats and ticket office close), many swimmers enter the cave by sea.

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Many people think of the open sea as the domain of sharks, but perhaps surprisingly, several species of sharks prefer to inhabit caves and even small crevices in reefs. Certainly those species known as nurse sharks routinely wedge themselves under ledges when resting.

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Sunlight passing through an underwater cavity and shining through the seawater creates a blue reflection that illuminates the cavern. The cave extends some 50 metres into the cliff at the surface, and is about 150 metres (490 ft) deep, with a sandy bottom.

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You are not allowed to swim in the Blue Grotto and you cannot jump-off the rwa boat when you are inside the cave. However after the closing time some people get in to swim (and it's considered to be an amazing experience!)

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The Blue Grotto in the Island of Capri is one of the 7 natural wonders of the world! The Blue Grotto in the Island of Capri is one of the 7 natural wonders of the world!

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Flora And Fauna Plants and animals are visible through the water in the caverns, and divers can see barracudas, jacks, octopus, and morays in the water itself. The caverns also offer a view of Fiflia, an inlet uninhabited by humans, which is home to endemic species, such as the Maltese wall lizard.

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Blue grotto is thought to be Emperor Tiberius' personal swimming hole and temple. Geometry of the cave is also quite complex and mysterious. Three connecting passageways at the back of the main hall lead to the 'Room of Names', named after the graffiti visitors left over the centuries.

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Why is the Blue Grotto so, um, blue? The bright azure color of the water inside the cave is due to the sunlight which enters the cavern through an underwater opening which is positioned exactly under the cave's mouth.

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