Dive-site story
Skomer Island sits within Wales' premier Marine Conservation Zone, protected by tidal channels off the Pembrokeshire coast. Nutrient-rich water washing through steep gullies, submerged pinnacles, and boulder slopes supports dense colonies of cold-water marine life. Atlantic grey seals frequently patrol the kelp fringes and investigate divers, while sea walls display dense carpets of sea fans, anemones, and sponges.
Encounters with inquisitive Atlantic grey seals along sheltered coves and kelp forests
Vibrant sponges, dead man's fingers, and delicate pink sea fans coating submerged rock faces
Spectacular invertebrate life including abundant crawfish, spider crabs, and diverse nudibranch species
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Late spring through autumn brings peak plankton blooms followed by cleared visibility, warmer water, and active seal pupping later in the season.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlantic Grey SealHalichoerus grypus | Common | ||||||||||||
| Pink Sea FanEunicella verrucosa | Common | ||||||||||||
| European Spiny LobsterPalinurus elephas | Common | ||||||||||||
| Dead Man's FingersAlcyonium digitatum | Common | ||||||||||||
| Lesser Spotted DogfishScyliorhinus canicula | Common | ||||||||||||
| Spiny Spider CrabMaja brachydactyla | Common |
Marine forecast
