gastéropodes

Nom ▲	Type	Notoriété	Popularité
Nucella	Taxon	13	0.5
Nucella Canaliculata	Taxon	8	0.4
Nucella Emarginata	Taxon	10	0.2
Nucella Lamellosa	Taxon	9	0.4
Nucella Lapillus	Taxon	20	4.4
Nucella Ostrina	Taxon	6	0.3
Nucleolaria	Taxon	7	0.4
Nudibranchia	Taxon	49	32.8
Nudipleura	Taxon	16	0.3
Obscurella	Taxon	4	0.1
Oceanida	Taxon	7	0.1
Ocenebra	Taxon	11	0.4
Ocenebra Brevirobusta	Taxon	7	0.0
Ocenebra Erinacea	Taxon	15	2.3
Ocenebrinae	Taxon	8	0.4
Ocinebrellus Inornatus	Taxon	6	1.4
Ocinebrina	Taxon	8	0.3
Ocinebrina Edwardsii	Taxon	6	0.1
Odostomia	Taxon	10	0.1
Okenia (mollusques)	Taxon	9	0.1
Okenia Nakamotoensis	Taxon	6	0.0
Oleacina Guadeloupensis	Taxon	6	0.2
Oleacinidae	Taxon	7	0.7
Oliva	Taxon	14	1.6
Oliva Oliva	Taxon	10	0.4
Olivancillaria Urceus	Taxon	7	0.4
Olivella	Taxon	8	0.3
Olivella Tergina	Taxon	9	0.0
Olivellidae	Taxon	3	0.4
Olivellinae	Taxon	6	0.0
Olividae	Taxon	17	2.9
Olivoidea	Taxon	8	0.2
Omphalotropis Rubens	Taxon	5	0.0
Onchidella Celtica	Taxon	6	0.6
Onchidiidae	Taxon	15	0.1
Onchidium	Taxon	10	0.0
Onchidorididae	Taxon	11	0.2
Onchidoridoidea	Taxon	8	0.5
Onchidoris	Taxon	10	0.3
Onchidoris Neapolitana	Taxon	5	0.2
Opeatostoma Pseudodon	Taxon	8	0.2
Ophieulima	Taxon	4	0.0
Ophiolamia	Taxon	4	0.0
Opisthobranchia	Taxon	31	6.0
Orania	Taxon	6	0.2
Orthogastropoda	Taxon	16	1.7
Orthonematoidea	Taxon	3	0.0
Orthonychia	Taxon	2	0.0
Orthonychia Elegans	Taxon	2	0.0
Orthonychiidae	Taxon	4	0.0