Underwater

The site of one of the most profitable silver mines in the world, reclaimed by Lake Superior.

This abandoned ship has remained in place since it ran aground in 1998.

The site of a dress rehearsal for D-Day that ended in disaster.

What started as a tailor shop to help swimmers live their mermaid dreams has grown into a full-scale aquarium, complete with live mermaid shows.

At low tide, you can see the remains of a 17th-century ship just off a Stockholm island.

A vertical tube that allows you to see what's going on underneath the Antarctic sea ice.

These submerged sculptures create a new habitat for marine life and exciting diving experience.

Walk down these stairs to get an underwater view of Switzerland's Lake Zug.

The wreck of a World War II cargo ship has become an unintentional time capsule at the bottom of the Red Sea.

The longest timber-piled jetty in the world has an underwater observatory.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

A rare underwater observatory in the Caribbean that provides breathtaking views of vibrantly colored aquatic life.