Blue Grotto (Capri)
Videos
The Blue Grotto is a sea cave on the coast of the island of Capri, southern Italy. Sunlight shining through an underwater cavity is reflected back upward through the seawater below the cavern, giving
Inside the Blue Grotto
Painting by Jakob Alt, 1835–36
A diagram of how daylight illuminates the cave through the underwater opening.
Sea cave
Videos
A sea cave or littoral cave is a type of cave formed primarily by the wave action of the sea. The primary process involved is erosion. Sea caves are found throughout the world, actively forming along
Blue Grotto (Capri)
…The Blue Grotto (Italian: Grotta Azzurra) is a sea cave on the coast of the island of Capri, southern Italy. Sunlight shining through an underwater cavity is reflected back upward through the seawater below…
Sea cave formation along a fault on Santa Cruz Island, California, United States
Sea cave collapse
Akun Island basalt sea cave
Exploring a sea cave