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The shell of Fasciolario buccinoides, a species of gastropod.

Fasciolario Gastropod

The shell of Fasciolario buccinoides, a species of gastropod.

The shell of Pyrifusus Newberryi, a species of gastropod.

Pyrifusus Gastropod

The shell of Pyrifusus Newberryi, a species of gastropod.

"Gnathodon cuneatus. A bivalve mollusk. G. cuneatus is the cuneate clam of Louisiana." -Whitney, 1911

Gnathodon

"Gnathodon cuneatus. A bivalve mollusk. G. cuneatus is the cuneate clam of Louisiana." -Whitney, 1911

An illustration of a harp-shell, "the shell of a genus of [mollusks] belonging to the gasteropoda and to the whelk family" (Vaughan).

Harp-shell

An illustration of a harp-shell, "the shell of a genus of [mollusks] belonging to the gasteropoda and…

In high orders of Mollusca the circulation resembles that of fish. Shown is the heart and arteries of a snail. Labels: 2, The stomach. 3, Intestines. 5, Heart. 6, Aorta. 7, Pulmonary artery.

The Heart and Arteries of a Snail

In high orders of Mollusca the circulation resembles that of fish. Shown is the heart and arteries of…

"Helix albolabris, a pulmonate Gasteropod." -Galloway, 1915

Helix Albolabris

"Helix albolabris, a pulmonate Gasteropod." -Galloway, 1915

"Many species hibernate. The land-snails bury themselves in the ground, or conceal themselves under the back of trees, in holes in walls, or even in the stems of large umbelliferous plants. They close the mouth of the shell with a calcareous plate, technically called an epiphragm, which they secrete by means of their mantle, and which is perforated by a small hole to admit the air." — Encyclopediia Britannica, 1893

Helix Descrtorun

"Many species hibernate. The land-snails bury themselves in the ground, or conceal themselves under…

The Ivory Shell (Eburna spirata) is a gastropod mollusk in the Buccinidae family of true whelks.

Ivory Shell

The Ivory Shell (Eburna spirata) is a gastropod mollusk in the Buccinidae family of true whelks.

"Patella vulgata, seen from the ventral side. f, foot; g.l, circlet of gill lamellae; m. e, edge of the mantle; mu, attachment muscle; sl, slits in the attachment muscle; sh, shell; v, efferent branchial vessel; v', aorta; ve, smaller vessels." -Parker, 1900

Limpet

"Patella vulgata, seen from the ventral side. f, foot; g.l, circlet of gill lamellae; m. e, edge of…

The shell of Fissurella listeri, a species of keyhole limpet, a freshwater snail.

Shell of Keyhole Limpet

The shell of Fissurella listeri, a species of keyhole limpet, a freshwater snail.

Mactra stultorum, previously sometimes known as Mactra corallina is a species of edible saltwater clam, a marine bivalve mollusk in the family Mactridae, the trough shells.

Right Valve of a Mactra Stultorum

Mactra stultorum, previously sometimes known as Mactra corallina is a species of edible saltwater clam,…

A diagram of a mollusca. Mollusca are soft-bodied animals that are usually protected by an external skeleton or shell composed of carbonate of lime. Labels: 1, Alimentary canal. 2, Heart. 3, Cerebral ganglion. 4, Pedal ganglion. 5, Ganglion of digestive organs and muscles.

Diagram of a Mollusca

A diagram of a mollusca. Mollusca are soft-bodied animals that are usually protected by an external…

In the Mollusca are found the ganglions and connective arrangement, with both sensitive and motor nerves, and on a plan corresponding to the body. Labels: 1, Esophagal ganglions. 2, Cerebral ganglions. , Pedal of locomotive ganglions. 4, Respiratory ganglions.

Diagram of a Type of Mollusca

In the Mollusca are found the ganglions and connective arrangement, with both sensitive and motor nerves,…

Murex is a genus of predatory gastropod mollusks.

Murex

Murex is a genus of predatory gastropod mollusks.

"Longitudinal Section through a Fresh-water Mussel. a, edge of mantle; b, foot, with position of ganglion indicated; c, gills; d, mouth; e, tentacles or palps; f, posterior adductor muscle; g, anterior adductor; h, head-ganglion; i, ventricle of heart; j, auricle of heart; k, rectum; l, kidney; m, exhalent aperture; n, inhalent aperture." -Vaughan, 1906

Mussel Anatomy

"Longitudinal Section through a Fresh-water Mussel. a, edge of mantle; b, foot, with position of ganglion…

"Mya arenaria, in living position." -Taylor, 1904

Mya arenaria

"Mya arenaria, in living position." -Taylor, 1904

"Mya truncata, in living position." -Taylor, 1904

Mya truncata

"Mya truncata, in living position." -Taylor, 1904

"Nassa reticulata." -Taylor, 1904

Nassa reticulata

"Nassa reticulata." -Taylor, 1904

"Natica catenoides." -Taylor, 1904

Natica catenoides

"Natica catenoides." -Taylor, 1904

Naticina papilla is a species of naticoid, a predatory sea snail in the gastropod class of Mollusca.

Naticoid

Naticina papilla is a species of naticoid, a predatory sea snail in the gastropod class of Mollusca.

Naticina haliotoides is a species of naticoid, a predatory sea snail in the gastropod class of Mollusca.

Naticoid

Naticina haliotoides is a species of naticoid, a predatory sea snail in the gastropod class of Mollusca.

"Gyroceras goldfussi. GYROCERATIDAE. A family of nautiliform shells of a discoidal shape, in which the last whorl is parallel with the others, all being connected." -Whitney, 1911

Nautiloid

"Gyroceras goldfussi. GYROCERATIDAE. A family of nautiliform shells of a discoidal shape, in which the…

"Section of shell of Nautilus." -Thomson, 1916

Nautilus Shell

"Section of shell of Nautilus." -Thomson, 1916

"Section of the shell of Nautilus pompilius, showing the septa (s, s), the septal necks (s. n., s. n.), the siphuncle (si, represented by dotted lines), and the large body-chamber (ch)." -Parker, 1900

Chambered Nautilus

"Section of the shell of Nautilus pompilius, showing the septa (s, s), the septal necks (s. n., s. n.),…

A common fusoid gastropod of the northern Atlantic; three fourths natural size.

Neptunea Islandica

A common fusoid gastropod of the northern Atlantic; three fourths natural size.

"The Devil-fish (Octopus). A, at rest; B, swimming. a, arms, with suckers on the inner aspect; e, eye; s, siphon or funnel." -Galloway, 1915

Octopus

"The Devil-fish (Octopus). A, at rest; B, swimming. a, arms, with suckers on the inner aspect; e, eye;…

Graneledone verrucosa is a species of cephalopods in the Octopodidae family of octopuses.

Octopus

Graneledone verrucosa is a species of cephalopods in the Octopodidae family of octopuses.

The Green Ormer (Haliotis tuberculata) is an edible mollusk considered a delicacy.

Green Ormer

The Green Ormer (Haliotis tuberculata) is an edible mollusk considered a delicacy.

"Otocyst in a mollusk. n, nerve; ;o, otolith; s.c., sensory cells in wall of otocyst." — Galloway

Otocyst

"Otocyst in a mollusk. n, nerve; ;o, otolith; s.c., sensory cells in wall of otocyst." — Galloway

Oysters grow for the most part in marine or brackish water. Inside a usually highly calcified shell is a soft body.

Oyster

Oysters grow for the most part in marine or brackish water. Inside a usually highly calcified shell…

Oysters grow for the most part in marine or brackish water. Inside a usually highly calcified shell is a soft body.

Oyster

Oysters grow for the most part in marine or brackish water. Inside a usually highly calcified shell…

Oysters grow for the most part in marine or brackish water. Inside a usually highly calcified shell is a soft body.

Oyster

Oysters grow for the most part in marine or brackish water. Inside a usually highly calcified shell…

An illustration of a oyster shell. The common name oyster is used for a number of different groups of bivalve mollusks, most of which live in marine habitats or brackish water. The shell consists of two usually highly calcified valves which surround a soft body. Gills filter plankton from the water, and strong adductor muscles are used to hold the shell closed.

Oyster Shell

An illustration of a oyster shell. The common name oyster is used for a number of different groups of…

An illustration of a oyster shell. The common name oyster is used for a number of different groups of bivalve mollusks, most of which live in marine habitats or brackish water. The shell consists of two usually highly calcified valves which surround a soft body. Gills filter plankton from the water, and strong adductor muscles are used to hold the shell closed.

Oyster Shell

An illustration of a oyster shell. The common name oyster is used for a number of different groups of…

An illustration of a oyster shell. The common name oyster is used for a number of different groups of bivalve mollusks, most of which live in marine habitats or brackish water. The shell consists of two usually highly calcified valves which surround a soft body. Gills filter plankton from the water, and strong adductor muscles are used to hold the shell closed.

Oyster Shell

An illustration of a oyster shell. The common name oyster is used for a number of different groups of…

A characteristic snail of freshwater ponds. Female on left, male on right.

Paludina Decisa

A characteristic snail of freshwater ponds. Female on left, male on right.

"The Paper Nautilus (Argonauta argo). e, eye; m, mouth; f, siphon; sh, shell; t, tentacles." -Galloway, 1915

Paper Nautilus

"The Paper Nautilus (Argonauta argo). e, eye; m, mouth; f, siphon; sh, shell; t, tentacles." -Galloway,…

"Pecten varius." -Taylor, 1904

Pecten varius

"Pecten varius." -Taylor, 1904

"Pectunculus glycimeris." -Taylor, 1904

Pectunculus glycimeris

"Pectunculus glycimeris." -Taylor, 1904

Shells of a pelecypod found in the elevated sand beds of northeastern New England, New Brunswick, etc. This species still lives in the modern ocean.

Pelecypod

Shells of a pelecypod found in the elevated sand beds of northeastern New England, New Brunswick, etc.…

The common periwinkle (Littorina littorea) is an edible species of sea snail in the Littorinidae family of the winkles.

Common Periwinkle

The common periwinkle (Littorina littorea) is an edible species of sea snail in the Littorinidae family…

This species is able to hollow out a home in a solid block of gneiss, one of the hardest rocks. To excavate its cell at the bottom of one of these gloomy retreats seems to be all that the animal lives for.

Pholas Dactylus (Linnaeus)

This species is able to hollow out a home in a solid block of gneiss, one of the hardest rocks. To excavate…

"Proneomenia. Nervous system. e.g., Cerebral ganglia; slg., sublingual; a.p.g., anterior pedal; p.p.g., posterior pedal; p.v.g., posterior viscerals; sl., sublingual connectives; cpc., cerebro-pedal connective; pe., longitudinal pedal nerves; la., longitudinal lateral nerves." -Thomson, 1916

Proneomenia

"Proneomenia. Nervous system. e.g., Cerebral ganglia; slg., sublingual; a.p.g., anterior pedal; p.p.g.,…

Deep-sea pteropod ooze, enlarged.

Pteropod ooze

Deep-sea pteropod ooze, enlarged.

"Shell-bearing Pteropoda. f, f, fins; l, liver; o, ovary; sh, shell." -Parker, 1900

Pteropoda

"Shell-bearing Pteropoda. f, f, fins; l, liver; o, ovary; sh, shell." -Parker, 1900

Mollusks grouped as opisthobranch gasteropods. Carniverous and found in open water.

Pteropoda

Mollusks grouped as opisthobranch gasteropods. Carniverous and found in open water.

"Purpura lapillus." -Taylor, 1904

Purpura lapillus

"Purpura lapillus." -Taylor, 1904

<i>Fusus antiquus</i>. "...a division of prosobranchiate gastropods, having the lip of the shell notched, canaliculate, or tubular, for the protrusion of a respiratory siphon. a, branchial siphon; b, proboscis; c, operculum; d, d, tentacles; f, foot." &mdash;Whitney, 1889

Red Whelk

Fusus antiquus. "...a division of prosobranchiate gastropods, having the lip of the shell notched, canaliculate,…

An illustrative view of the dissection of he renal organs of a chiton. "F, foot; L, Edge of the mantle not removed in the front part of the specimen; s.o., Oesophagus; af, anus; gg, Genital duct; go, External opening of the same; eg, Stem of the nephridium leading to no, its external aperture; nk, reflected portion of the nephridial stem; ng, Fine caeca of the nephridium, which are seen ramifying transversely over the whole inner surface of the pedal muscular mass." -Britannica, 1910

Dissection of the Renal Organs of a Chiton

An illustrative view of the dissection of he renal organs of a chiton. "F, foot; L, Edge of the mantle…

The scallop (Hinnites pusio) is a marine bivalve mollusk from the Pectinidae family.

Scallop

The scallop (Hinnites pusio) is a marine bivalve mollusk from the Pectinidae family.

Scaphander lignarius is a species of gastropods in the Scaphandridae family.

Scaphander

Scaphander lignarius is a species of gastropods in the Scaphandridae family.

Scaphites equalis is a species of extinct cephalopods that thrived during the Cretaceous period. "A genus of ammonites, or fossil ammonoid cephalopods of scaphoid shape, typical of the family <i>Scaphitidae</i>; the scaphites. The have the early walls regularly involute, but the last whorl detached, and straight for some distance, when it becomes again recurved toward the body." &mdash;Whitney, 1889

Scaphites equalis, Extinct Cephalopod Fossil

Scaphites equalis is a species of extinct cephalopods that thrived during the Cretaceous period. "A…

Scissurella crispata is a species of small sea snails in the Scissurellidae family.

Scissurella

Scissurella crispata is a species of small sea snails in the Scissurellidae family.

"Sea-lemon (Goniodoris nodosa). GONIODORIDIDAE. A family of nudibranchiate gastropods, typified by the genus Goniodoris, having a sessile or petiolated suctorial pharyngeal bulb." -Whitney, 1911

Sea Lemon

"Sea-lemon (Goniodoris nodosa). GONIODORIDIDAE. A family of nudibranchiate gastropods, typified by the…

"The Sea Lizard (Glaucus atlanticus) is a blue sea slug in the Glaucidae family of colorful sea slugs." -Whitney, 1911

Sea Lizard

"The Sea Lizard (Glaucus atlanticus) is a blue sea slug in the Glaucidae family of colorful sea slugs."…

16. Andrena cineraria, 17. Helix virgata, 18. Pod-lover moth, 19. Anurida maritima, 20. Machillis maritima, 21. Sea-slater, 22. Shore wainscot moth, 23. Ground lackey moth.

Types of Seashore Life

16. Andrena cineraria, 17. Helix virgata, 18. Pod-lover moth, 19. Anurida maritima, 20. Machillis maritima,…

"Chromatophore of Sepia, magnified. nuc, nuclei in wall of sac; pigm, pigment; rad. mus, radiating strands of muscle." -Parker, 1900

Sepia Chromatophore

"Chromatophore of Sepia, magnified. nuc, nuclei in wall of sac; pigm, pigment; rad. mus, radiating strands…

A long, slender sea shell.

Shell

A long, slender sea shell.

A swirl shaped shell.

Shell

A swirl shaped shell.

A typical clam shell formed by lingual ribbon.

Clam Shell

A typical clam shell formed by lingual ribbon.