Pila
Unio
Mytilus
Nautilus
D. Nautilus
Sepia
Loligo
Octopus
Mytilus
Annelida
Moliusca
Echinodermata
Arthropoda
Caphalopoda
Gastropoda
Pelecypoda
Scaphopoda
scallop
sea mussel
razor shell
any of these
expelling water in a jet through siphon
lashing moment of their cephalic arms
characteristic undulations of their lateral fins
none of these
Nautilus
Pila
Argpnata
Unio
Gastropoda
Criton
Bivalvia
Monoplacophora
giant clam
giant squid
giant Snail
giant octopus
Trochophore
Veliger
Glochidium
Muller's larva
Chaetopterus
Aphrodite
Amphihite
Limidus
Echinodenns
Arthropods
Molluscs
Annelida
Octopus
Sepia
Mytilus
Teredo
Pelecypoda
Scaphopoda
Bivalva
Gastropoda
Sepia
Loligo
Patella
Nautilus
devilfish
cuttlefish
black mussel
sea hare
dentalium
cypraea
nautilus
pinctada
Sepia
Lamellidens
Chiron
Pila
Caphalopods
Scaphopods
Bivalva
Gastropods
Amphineve
Gastropoda
Scaphopoda
Caphalopoda
Gastropoda
Scaphopoda
Bivalva
Cephalopoda
pulmonary sac
ctenidia
book lungs
trachea
a sensory organ for balancing
a sensory organ for smell
swimming organ
none of these
book lungs
pulmonary sacs
gills
respiratory siphons
Sepia (Caphalopoda)
Uttio (Pelecypoda)
Dentalium (Scaphopoda)
Pila (Gastropoda)
Unio
Mytilus
Teredo
Tridacna
Sepia
Octopus
Aplysia
Doris
Gastropoda
Caphalopoda
Bivalvia
Scaphopoda
Crab
Aretticola
Milipede
Centipede
Pinctada
Unio
Anodonta
Ostrea
elephant tusk shells
butterflies of the sea
lerrfons of the sea
cucumbers of the sea