subclass opisthobranchia   (TTS Sound)

The subclass_opisthobranchia has 1 Senses.

• subclass opisthobranchia, opisthobranchia
• 後鰓目
• gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares
• 後部から心臓までがあり、えらぶたを持たない場合にえらを有する腹足類動物：海牛を含む