Eroded specimen with irregular aperture. Away from the white rim, the tergo-scutal flap is whitish with varying amounts of grey (1). Almost 30% of the rim, at the rostral end, is blackish (2).
Mersey Estuary. October 2010.
07 Semibalanus balanoides
Eroded specimen with irregular aperture. Away from the white rim, the tergo-scutal flap is whitish with varying amounts of grey (1). Almost 30% of the rim, at the rostral end, is blackish (2).
Mersey Estuary. October 2010.