These caves show evidence of a change in sea levels that took place thousands of years ago. The caves once existed above the water line, but were flooded when sea levels rose. Deep within these ...

The underwater world is full of mysterious and fascinating places that are only open to those who dare to dive into the ...

Once submerged under the sea millions of years ago, the Cayman Crystal Caves were shaped by water erosion, creating rooms filled with stalagmite and stalactite formations. Over time, dripping ...

It’s a peculiar sea cave which formed slowly over thousands ... Over many thousands of years under the constant pounding force of the ocean waves it’s now more than 80 feet wide where it ...

These sea caves can be found on 0.5-mile hike in New England - but it is only accessible until March (when it is frozen).