• Alcyonidioides mytili (Dalyell, 1848) accepted as Alcyonidium mytili Dalyell, 1848
• Alcyonidium albidum Alder, 1857
• Alcyonidium ambulans (Remane, 1936)
• Alcyonidium candidum Ryland, 1963
• Alcyonidium cellarioides Calvet, 1900
• Alcyonidium condylocinereum Porter, 2004
• Alcyonidium diaphanum (Hudson, 1778)
• Alcyonidium disciforme Smitt, 1872
• Alcyonidium duplex Prouho, 1892
• Alcyonidium gelatinosum (Linnaeus, 1761)
• Alcyonidium hirsutum (Fleming, 1828)
• Alcyonidium hydrocoalitum Porter, 2004
• Alcyonidium mamillatum Alder, 1857
• Alcyonidium mytili Dalyell, 1848
• Alcyonidium parasiticum (Fleming, 1828)
• Alcyonidium polyoum (Hassall, 1841)
• Alcyonidium reticulum Ryland & Porter, 2000 accepted as Alcyonidium gelatinosum (Linnaeus, 1761)
• Alcyonidium variegatum Prouho, 1892
• Alcyonidium verrilli Osburn, 1912
• Alcyonidium vicarians d'Hondt & Chimenz Gusso, 2006
• Lobiancopora hyalina Pergens, 1889