book lungs
pulmonary sacs
gills
respiratory siphons
Sepia
Loligo
Octopus
Mytilus
elephant tusk shells
butterflies of the sea
lerrfons of the sea
cucumbers of the sea
devilfish
cuttlefish
black mussel
sea hare
Pila
Starfish
Housefly
Earthworm
Gastropoda
Caphalopoda
Bivalvia
Scaphopoda
Teredo
Doris
Loligo
Octopus
an annelid
an arthropod
an echinoderm
a mollusc
Pinctada
Unio
Anodonta
Ostrea
Echinodenns
Arthropods
Molluscs
Annelida
patella
limax
teredo
chiton
Trochophore
Veliger
Glochidium
Muller's larva
Gastropoda
Scaphopoda
Bivalva
Cephalopoda
myoglobin
anthocyanin
haemocyanin
hemoglobin
dentalium
cypraea
nautilus
pinctada
limax and helix
pila and helix
lymnaea and planorbis
none of these
Crab
Aretticola
Milipede
Centipede
Caphalopods
Scaphopods
Bivalva
Gastropods
Annelida
Moliusca
Echinodermata
Arthropoda
cuttlefish
squid
flying squid
devil fish
Chaetopterus
Aphrodite
Amphihite
Limidus
pulmonary sac
ctenidia
book lungs
trachea
Unio
Mytilus
Teredo
Tridacna
Neoplina
Chiton
Dentalium
Patella
Mikimoto
Katu
Haeckel
Von Mohl
Pila
Aplysia
Helix
Aphrodite
Annelida
Arthropoda
Mollusca
Chordata
thoracic appendages
foot
head appendages
none of these
external shell of cuttle fish
internal shell of cuttle fish
bones of octopus
calcareous matter of cuttle fish
Pholas
Teredo
Solen
Dentalium