Six C. stellatus crowded with 286 C. montagui on live Patella vulgata. C. stellatus easily discerned in water by bright orange mark at micropyle.
Right: female & male Campocea hirsuta, length 2.1 mm.
Several C. hirsuta and juvenile Melarhaphe neritoides lived among the barnacles on this limpet. See image 2 for them in situ.
Upper shore, Portland Bill, Dorset. April 2012.