Stängselrevet Reef
Kosterfjord · Sweden
Stängselrevet is a shallow rocky reef system running parallel to the Koster coastline, protected within the national park boundaries. Kelp forests of sugar kelp and oarweed dominate the upper 8 metres, giving way to open rock encrusted with soft corals and sponges. This is one of the best sites in Sweden to observe the full range of Kosterfjord's macro life in a single dive: leopard-spotted nudibranchs, painted gobies hiding in mussel clusters, and large common lobsters wedged into crevices. Shore entry is possible, making it ideal for independent divers staying on Koster island.
Conditions
Depth
2 to 22 m
Open water and up
Current
Usually still
Can pick up on the edge
Visibility
6 to 12 m
Clearest in the calm season
Water
4 to 17°C
7mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 4 | 4 | 4 | 5 | 8 | 12 | 14 | 14 | 11 | 8 | 6 | 4 |
| Vis (m) | 8 | 8 | 8 | 8 | 6 | 6 | 6 | 6 | 8 | 8 | 8 | 8 |
| Current | Still | Still | Still | Still | Still | Still | Still | Still | Still | Still | Still | Still |
Your chances of seeing each animal
Dead Man's Fingers
Last confirmed May 20, 2026 · 11 records
Very likely
Most dives
Blue Mussel
Last confirmed Dec 20, 2024 · 5 records
Very likely
Most dives
Sugar Kelp
Last confirmed Jun 26, 2025 · 3 records
Likely
About 6 in 10 dives
Oarweed
Last confirmed Aug 4, 2025 · 4 records
Likely
About 6 in 10 dives
Common Lobster
Last confirmed Jul 22, 2025 · 1 records
Likely
About 6 in 10 dives
Northern Stone Crab
Last confirmed Sep 11, 2024 · 1 records
Sometimes
About 1 in 3 dives
Purple Sea Urchin
Expected
Known here, not yet in recent logs
Dahlia Anemone
Expected
Known here, not yet in recent logs
Gear