Categories
Keywords
operculum
fish operculum
snail operculum
insect operculum
bird operculum
plant operculum
bony fish operculum
cartilaginous operculum
soft operculum
hard operculum
hinged operculum
flexible operculum
protective operculum
respiratory operculum
feeding operculum
sensory operculum
larval operculum
adult operculum
marine operculum
freshwater operculum
aquatic operculum
terrestrial operculum
operculum plate
operculum valve
operculum flap
operculum membrane