Hans Hillewaert:
Megabalanus tintinabulum
Hans Hillewaert:
Austrominius modestus
Hans Hillewaert:
Austrominius modestus (l) - Balanus crenatus (r)
Hans Hillewaert:
Austrominius modestus - Balanus crenatus
Hans Hillewaert:
Balanus crenatus
Hans Hillewaert:
Semibalanus balanoides