Standard MNCR survey of littoral sites betwen the southern end of the Menai Strait (Abermena Point) and Carmel Head. Sediment sites were sampled using 8 pooled 10.3 cm diameter cores and rock site epibiota was recorded on standard MNCR forms. Twenty-four sites were completed, ranging from steep barnacle dominated, wave exposed rock to sheltered rocky outcrops and from steep clean sandy beaches to sheltered muddy shores.