Trondheim Fjord
Norway · North Atlantic
Norway's Trondheim Fjord and the Agdenes outer coast offer some of the world's most dramatic cold-water diving — crystal-clear water down to 30 m visibility in winter, walls blanketed in plumose anemones, resident wolf fish, and giant king crab. Best diving runs May through September when surface water warms slightly and visibility peaks, though adventurous drysuiters dive year-round.
How this reef is doing
ⓘ How we measure thisReef state
Live science signals for this reef are still being gathered.
Coral cover
Fish life
Heat
Fishing
Open to fishing, and the water is busy.
Sources · Global Fishing Watch and reef gravity
What you will see
25 species across the dive sites here
Hooded Crow
Seen 24 days ago
at Munkholmen Island
Common Starfish
Seen 1 month ago
at Jørpeland Wall
Pollock
Seen 1 month ago
at Jørpeland Wall
Least concern
Edible Sea Urchin
Seen 1 month ago
at Agdenes Lighthouse Reef
Mallard
Seen 1 month ago
at Munkholmen Island
Least concern
Fieldfare
Seen 1 month ago
at Munkholmen Island
Least concern
Great Tit
Seen 1 month ago
at Jørpeland Wall
Least concern
Eurasian Blue Tit
Seen 2 months ago
at Jørpeland Wall
Least concern
Atlantic Wolf Fish
Seen 3 months ago
at Agdenes Wreck
European Ling
Seen 3 months ago
at Agdenes Wreck
Dead Man's Fingers
Seen 3 months ago
at Jørpeland Wall
Plumose Anemone
Seen 4 months ago
at Agdenes Wreck
Three-Coloured Aeolis
Seen 4 months ago
at Agdenes Wreck
Yellow Sea Slug Of ØRland
Seen 4 months ago
at Agdenes Wreck
Common Seal
Seen 5 months ago
at Munkholmen Island
Least concern
Pink Coryphella
Seen 6 months ago
at Agdenes Wreck
Nudibranch
Seen 6 months ago
at Jørpeland Wall
Edible Crab
Seen 6 months ago
at Munkholmen Island
Butterfish
Seen May 2025
at Munkholmen Island
Atlantic Halibut
Seen Aug 2024
at Agdenes Lighthouse Reef
Near threatened
Crowned Seaslug
Seen Jan 2024
at Agdenes Wreck
Cusk
Seen year round
at Munkholmen Island
Norway King Crab
Seen year round
at Agdenes Wreck
Red King Crab
Seen year round
at Agdenes Lighthouse Reef
Ballan Wrasse
Seasonal visitor
at Agdenes Lighthouse Reef
Least concern
Dive sites
Agdenes Wreck
atlantic wolf fish · european ling · plumose anemone · norway king crab
Munkholmen Island
common seal · cusk · edible crab · butterfish
Jørpeland Wall
dead man's fingers · pollock · nudibranch · common starfish
Agdenes Lighthouse Reef
red king crab · edible sea urchin · atlantic halibut · ballan wrasse