Fig. 5
Vertical distribution of Crepidula fornicata at Pennar (PE), Hazelbeach (HA), Cosheston (CO), and Beggars Reach (BR) in the Milford Haven Waterway. Bars are means (±SD) from 10 1-m2 quadrats taken in the intertidal (a) or 30 still images taken using a sled-mounted underwater still camera in the subtidal (b). Subtidal I 50 m distance from ~0 m above C.D. Subtidal II 150 m distance, Subtidal III middle of the channel and ~250–500 m distance (n.a. for PE due to narrow width of channel at this site)