calcareous tube-sponge
- kingdom: Animalia
- phylum: Porifera
- class: Calcarea
- order: Leucosolenida
- family: Leucosoleniidae
- genus: Leucosolenia
- species: Leucosolenia variabilis
- Zeebrugge
Flanders
Belgium- France
- Den Helder
North Holland- Yerseke
Zeeland
Netherlands