Diving in Cold Water

Dive beneath icebergs alongside penguins and leopard seals

Four ore carriers torpedoed at their pier in 1942, still lying at 27–40 m

Sweden's only cold-water coral reefs, inside its first marine national park

Granite walls and boulder fields — Denmark's only true rock diving

Giant Pacific octopus and anemone-covered walls in the 'Emerald Sea'

Curious grey seals routinely approach and play with divers

Basalt cliffs continuing underwater into surprisingly clear Atlantic water

Brackish water means three-hundred-year-old ships still stand with masts up

England's first marine reserve, and its grey seals follow divers around

Sherman tanks lie on the seabed beside the SS Empire Heritage

A German destroyer's bow rises to 10 m where she was run aground in 1940

Giant Pacific octopus over 4 m across, and wolf eels paired in rock dens

Dive the slack-tide window of the world's strongest maelstrom

Dive intact WWI German battleships scuttled in 1919

Swim beneath drifting sea ice searching for tiny 'sea angel' clione

Visibility measured in tens of metres inside a rift between two tectonic plates

Snorkel alongside orca pods hunting herring baitballs in Arctic fjords

The Rondo stands almost vertical, stern at 15 m and bow at 50

Jewel anemones and grey seals on a Berwickshire volcanic coast

A shallow hydrothermal vent cone rising to 15 m in a cold Arctic fjord

Walrus swim out to inspect divers at 78° north

Snowmelt so clear you can see the trees from the riverbed

Cuttlefish arrive by the hundred each spring to court in the shallows