Conditions & tides
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
Trefor Pier is a shore dive on the north coast of the Llyn Peninsula in Gwynedd, Wales, alongside the small village of Trefor. It reaches a maximum depth of around 12 metres, but despite that shallow depth it is rated an advanced dive, so it should not be treated as an easy shore entry on the strength of the numbers alone. The site sits along the sheltered pier structures dotted along this stretch of the Welsh coast.
AI overviewMarine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
NursehoundScyliorhinus stellarisReported here · unconfirmed
Small-spotted CatsharkScyliorhinus caniculaReported here · unconfirmed
Edible CrabCancer pagurusReported here · unconfirmed
Velvet Swimming CrabNecora puberReported here · unconfirmed
European Green CrabCarcinus maenasReported here · unconfirmed
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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