The Blue Grotto is a natural cavern of 25 meters wide and 60 meters long, with a tiny entrance less than a meter high.
Entrance to the Blue Grotto is possible only by boarding small rowboats which hold a maximum of four passengers at a time.
The entrance ticket must be purchased at the floating ticket office at the cave entrance. After purchasing your ticket, your skipper will ask that you lay back in order to pass through the small mouth of the cave.
Tickets cost around EUR 18 and the tour takes about 2 hours.