www.nationaltrust.org.uk · Official Nature
Official Holywell access context and offshore Carter's Rocks reference.
Dive Spot Guide•
Carters Rock
Boat-only kelp reef off Holywell Bay, Cornwall
Local operator required
Boat access and changing sea conditions make an organised trip the sensible default.
Shallow rocky reef with easy training terrain, but it needs a boat and a calm sea window because the North Cornwall coast is exposed.
About Carters Rock
Carters Rock is a boat-only kelp reef off Holywell Bay in North Cornwall. Its bouldery slope, kelp cover, and sand transition give it an easy, readable profile that works well for entry-level training and relaxed sightseeing dives. The open-coast setting means a calm sea window matters as much as the shallow terrain, so the best outings are short, conservative boat trips.
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Research Estimate At Carters Rock
Conservative baseline from public research. No community dives logged yet.
AccessModerate entry effort
Aquatic LifeGreat variety
FacilitiesGood facilities
SurgeModerate surge
Where Is Carters Rock?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Carters Rock Planning Details
Depth range, seasonality, and planning context.
Reported Depth
0m - 10m
Depth Note
Kelp runs along the bouldery slope to about 7 m before transitioning to a white sandy bottom; maximum depth around 10 m.
Best Season
Late spring to early autumn
Typical Conditions
Shallow kelp-and-rock reef on an exposed North Cornwall coast; calm sea windows matter more than the reef complexity.
Safety & Access At Carters Rock
Hazards, restrictions, and access requirements.
Key Hazards
Restricted access
Safety Notes
Boat-only access and an exposed coastal setting mean conservative timing and turn points are sensible.
Access Restrictions
Only accessible by boat.
Legal Notes
Follow local beach access and wildlife guidance when staging around Holywell Bay.
Local Intel For Carters Rock
Community notes to help plan your visit.
Scuba Diving
Shallow profile and terrain make it suitable for entry-level diver training.
Freediving
Only for confident freedivers on a very calm boat trip; the attraction is the reef texture rather than deep water.
Snorkeling
Best as a guided boat snorkel on a very calm day; it is not a casual shore snorkel.
Wildlife at Carters Rock
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Carters Rock
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Carters Rock
Average conditions based on logged dives & visits.
No community dive data has been logged here yet. Be the first to record a dive and seed the averages.
