page_title: List of crustaceans of Ireland
section_title: Family Balanidae
hierarchical_section_title: List of crustaceans of Ireland / Class Maxillopoda / Order Sessilia (acorn barnacles) / Family Balanidae
caption_attribution_description: English: Balanus crenatus, calcified basis(right) and shell(left, internal view) Français&#160;: Balanus crenatus, base calcifiée (à droite) et muraille (à gauche, vue interne).
context_page_description: There are 1,774 species of crustaceans recorded in Ireland.
  Crustaceans are arthropods of the subphylum Crustacea. Most are aquatic, such as shrimp, barnacles, lobsters, crayfish, krill, but some are also adapted for land living, such as woodlice and crabs.
context_section_description: 6-7 species including
  Balanus balanus
  Balanus crenatus
  Balanus perforatus
  Elminius modestus
caption: Balanus crenatus
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