The cave is formed by the collision of waves against the limestone cliffs, creating a natural vaulted ceiling.
It is one of the largest in a series of sea caves located along the Luštica Peninsula coastline.
The depth of the water inside the cave reaches approximately 4 to 5 meters.
The interior of the cave remains illuminated by reflected light even when the sun is not directly above the entrance.
The cave is a popular destination for local marine biodiversity, often frequented by schools of small fish.
Blue Cave, locally known as Plava Špilja, is a natural sea grotto located on the Luštica Peninsula in Montenegro. The cavern features two entrances and an interior height of approximately 9 meters, allowing small boats to enter easily. Its distinctive azure color is created by the refraction of sunlight reflecting off the white sandy bottom through the clear, deep-blue Adriatic water. The cave is accessible exclusively via water transport from nearby coastal settlements. It is situated along the rocky southern coastline of the peninsula near the entrance to the Bay of Kotor.
From inside the cave looking back toward the entrance to capture the contrast between the dark interior and the bright turquoise water.
Wear water shoes as the cave entrance and surrounding rocks can be slippery and sharp.
Visit as part of a boat tour that allows for swimming, as the water clarity is the primary attraction.
Bring a waterproof camera or phone case to capture the light reflections inside the cavern.
Avoid booking large, crowded tour boats if you prefer a quieter experience; smaller private speedboats allow for easier access and more time for swimming.
Accessible primarily from late spring through early autumn, weather permitting; tours are frequently canceled during periods of high winds or rough seas.
Swimmers should avoid touching the cave walls to protect the delicate limestone formations and marine growth.
