It is a world cut off from our own by thick blankets of floating ice, but some scientists are taking the plunge to learn how these frozen depths are changing.

The hole goes right through the 10-foot-thick ice floe. It’s just wide enough for a man, and below it lies the sea. We’ve never tried to dive through such a small opening. I go first.

One way to ensure your new dive computer has all the functionality you could imagine is to build your own. We spoke with a ...

During the recovery, the dive team reported about 18-20 inches of ice. They say the ice was about 7 inches thick near the edge of the hole where the SUV went through.

But during the last ice age when sea levels were much lower, the caves were the high-and-dry habitat for a completely different group of animals. On one dive into a blue hole on Great Abaco Island ...

The Great Blue Hole, located off ... and collapsed after the Ice Age ended when sea levels on Earth rose. Read also: Turtle sets deep-sea record with 4,408-foot dive in Solomon Islands Inside ...