Arctic Ocean for
Lepidopleurus cancellatus (G. B. Sowerby II, 1840)
Atlantic Europe for
Lepidopleurus cancellatus (G. B. Sowerby II, 1840)
Belgian Exclusive Economic Zone for
Leptochiton asellus (Gmelin, 1791)
Belgian Exclusive Economic Zone for
Trachydermon cinereus (Linnaeus)
Blankenberge for
Leptochiton asellus (Gmelin, 1791)
Blankenberge for
Trachydermon cinereus (Linnaeus)
Dunkerque for
Lepidopleurus cancellatus (G. B. Sowerby II, 1840)
Dutch Exclusive Economic Zone for
Trachydermon cinereus (Linnaeus)
East Hinder for
Leptochiton asellus (Gmelin, 1791)
English Channel for
Leptochiton asellus (Gmelin, 1791)
French Exclusive Economic Zone [Atlantic part] for
Trachydermon cinereus (Linnaeus)
French Exclusive Economic Zone [Mediterranean part] for
Trachydermon cinereus (Linnaeus)
Helgoland for
Trachydermon cinereus (Linnaeus)
Kentish Knock for
Leptochiton asellus (Gmelin, 1791)
Knokke-Heist for
Trachydermon cinereus (Linnaeus)
Nieuwpoort for
Trachydermon cinereus (Linnaeus)
Oostende for
Leptochiton asellus (Gmelin, 1791)
Pacific Ocean for
Lepidopleurus cancellatus (G. B. Sowerby II, 1840)
Ruytingen Pas for
Leptochiton asellus (Gmelin, 1791)
Sandettie Bank for
Leptochiton asellus (Gmelin, 1791)
Shipwash for
Leptochiton asellus (Gmelin, 1791)
South Coast of England for
Leptochiton asellus (Gmelin, 1791)
Spanish Exclusive Economic Zone [Atlantic part] for
Lepidopleurus cancellatus (G. B. Sowerby II, 1840)
Thorntonbank for
Leptochiton asellus (Gmelin, 1791)
Walcheren for
Trachydermon cinereus (Linnaeus)
Wandelaar for
Leptochiton asellus (Gmelin, 1791)
Westhinder for
Leptochiton asellus (Gmelin, 1791)
Wimereux for
Trachydermon cinereus (Linnaeus)
Yerseke for
Lepidopleurus cancellatus (G. B. Sowerby II, 1840)
Zeebrugge for
Leptochiton asellus (Gmelin, 1791)
Zwarte Polder for
Trachydermon albus (Linnaeus, 1767) (
inaccurate)