Sublittoral survey from Point Lynas, E Anglesey to Rhos-on-sea using SCUBA to complete recording, photography and sampling of rock and sediment habitats. Seventeen sites included fine sediment samples. Hard substrata were restricted to close inshore around the Great Ormes Head, Puffin Island and the adjacent coast, Ynys Dulas and Point Lynas. Cobbles and pebbles found in the near shore with sediment covering the majority of the seabed. Survey curtailed due to limited time available and bad weather resulting in a thin spread of sites across the survey area.