description Zelena Špilja (Green Cave) Overview
Zelena Špilja, or the Green Cave, is a natural sea cave located on the eastern side of the island of Biševo in Croatia. It is distinguished by an emerald-green luminous effect created when sunlight filters through an underwater opening and reflects off the shallow sea floor. The cave is accessible to visitors via small boat tours during the summer months and is a popular destination for swimming and snorkeling. Its unique lighting is best observed around midday.
help Zelena Špilja (Green Cave) FAQ
Is Zelena Špilja on Biševo or Ravnik island?
The well-known Green Cave visited from Vis is on the small island of Ravnik, not Biševo. Biševo is instead famous for Modra Špilja, the Blue Cave.
Can visitors swim inside Croatia's Green Cave?
Swimming is commonly permitted when sea conditions and current local rules allow it. This distinguishes Green Cave from the tightly controlled Blue Cave visit, where passengers normally remain in an authorized boat.
Why does the water inside Green Cave look emerald?
Sunlight enters through an opening in the cave roof and reflects through the seawater. The effect changes with the sun angle, cloud cover, and surface conditions.
Can Green Cave and Blue Cave be visited on the same boat trip?
Yes, many excursions around Vis combine Ravnik's Green Cave with Biševo's Blue Cave and stops such as Stiniva Cove. They are separate caves on separate islands, so the itinerary requires boat travel between them.
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