Difference between revisions 106871679 and 106871680 on dewiki

[[Image:seacaving.jpg|thumb|300px|Exploring a sea cave]]
A '''sea cave''', also known as a '''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 present coastlines and as [[relict]] sea caves on former coastlines. Some of the largest wave-cut caves in the world are found on the coast of Norway, but(contracted; show full)nia Channel Islands]] that are now totally submerged by the rise in sea levels over the last 12 000 years. In regions of steady uplift, continual littoral erosion may produce sea caves of great height — Painted Cave is almost 40 m high at its entrance. On the Norwegian coast there are huge sea caves now uplifted 30 or more meters above sea level. Sediment dating in the largest of these (Halvikshulen in Osen, 340 m long)shows that it was formed over a period of at least a million years. It may well be the l
arongest wave-cut cave known by both length and volumein the world.  The largest cave by volume is Rikoriko Cave in the [[Poor Knights Islands]] in New Zealand with 221,494 m<sup>3</sup>.

Finally, caves that are larger tend to be more complex. By far the majority of sea caves consist of a single passage or chamber. Those formed on faults tend to have canyon-like or angled passages that are very straight. In Seal Canyon Cave on Santa Cruz Island, entrance light is still visible from the back of the cave 189 m from the entrance. By contrast, caves formed along horizontal bedding planes tend to be wider with lower ceiling heights. In some areas, sea caves may have dry upper levels, lifted ab(contracted; show full)
[[Category:Sea caves| ]]
[[Category:Coastal and oceanic landforms]]

[[ko:해식동]]
[[ja:海蝕洞]]
[[simple:Sea caves]]
[[sk:Príbojová jaskyňa]]