4 facts
This perfectly circular underwater cavern is over 300 meters across and 125 meters deep, formed during past ice ages. It's a world-renowned dive site, revealing ancient stalactites and diverse shark species within its depths.
The Tongue of the Ocean is a deep oceanic trench, approximately 200 kilometers (120 miles) long and up to 1,400 meters (4,600 feet) deep. It separates several Bahamian islands, with its unique geology supporting diverse marine life and drawing scientific interest.
The Mariana Trench in the western Pacific Ocean plunges to nearly 36,070 feet (10,994 meters) at its Challenger Deep. If Mount Everest were placed at this spot, its peak would still be over a mile underwater.
The Denmark Strait Cataract, located between Greenland and Iceland, is an underwater waterfall over 11,500 feet high and 100 miles wide. It forms when cold, dense water from the Nordic Seas plunges beneath warmer water.