More than 1 million years.
blue holes are inland underwater caves that form when land collapses, creating a sinkhole.
Not sure quite what you are asking about, but anyway it is more accurate to ask what kinds of rock hold the caves, not what rocks are in the caves. Most caves are in limestone, a sedimentary rock, irrespective of water-level. There are a few caves in igneous rock: lava-tubes in basalt-flows, but on land, not underwater. There are also a good many caves in marble, the metamorphic but still-soluble form of limestone; and again the water-level is secondary to the cave itself. A few caves exist in rock-salt, an evaporite.
This is false.
Tornadoes cannot occur underwater, but they can form on water just as they form on land.
Underwater volcanoes form islands.
Caves normally form in limestone when it is dissolved by solution. They form close to the surface and can then form more caves below as the solution moves downward.
how do caves form
Sea caves form by ocean waves pounding at the base of seashore cliffs.
Basalt lavas form lave tube caves. These caves form from basalt lavas because they are of relatively low viscosity.
ice caves form when the inside of a glacier melts and the whole gets bigger and bigger
Stalac"tites", top, or on the roof of the cave. Stalagmites form on the floor of caves.
they are formed when animals in the caves are trying to get to shelter and the limestone in the caves melt and eventually form lime-stones caves
Unlike limestone caves, which can take thousands of years to form, lava caves and lava tubes form almost instantaneously, as they form from rapid cooling.
yea i mean totally dude
The waves cause erosion of the rocks to make caves
Limestone is the rock that is in Caves. When carbonate acid is reacted to the limestone in the caves, it will corrode forming strange caves landforms.
Underwater eruptions cause tsunamis and cause lava to form and underwater ridge.
well when its form underwater eventually it will erupt causeing it to make land form around it :)
Calcium and carbon form limestone. limestone caves are formed by water and other materials eroding the cliff to form a cave.
wind caves are formed by wind blowing fine sand particles.