What it's like to swim with orcas—or killer whales—in Norway's Troms region aboard *Sula* liveaboard.

Scapa Flow in Scotland holds many World War I and World War II shipwrecks for scuba divers to explore.

A team of scuba divers from Russia explores under the ice to find sea angels in the chilly White Sea.

Scuba divers explore a flooded uranium mine shaft in Poland and uncover its dark roots from World War II.

Scuba divers can explore the sunken World War II aircraft off Vis Island in Croatia.

A travel guide to Sardinia, Italy, and the best scuba diving in Italy.

Scuba divers can explore an abandoned opal mine in Slovakia, one of the most enchanting dive sites in the world.

Archaeologists excavating the famous ancient Greek shipwreck that yielded the Antikythera mechanism have recovered more than 50 items including a bronze armrest (possibly part of a throne), remains of a bone flute, fine glassware, luxury ceramics, a pawn from an ancient board game, and several elements of the ship itself.

The best dive destinations with no scuba tank required. Swim with whales in Norway, Tonga and Sri Lanka or grab your freediving gear and head to Australia to dive with fur seals.