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  Mollusc Pictures

There are 177 picture matches for 'Mollusc'.
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Atlantic Oval Squid
Atlantic Oval Squid
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More About Molluscs ...
The mollusks or molluscs are the large and diverse phylum Mollusca, which includes a variety of familiar creatures well-known for their decorative shells or as seafood. These range from tiny snails and clams to the octopus and squid (which are considered the most intelligent invertebrates). The giant squid is the largest invertebrate, and, except for their larvae and some recently captured juveniles, has never been observed alive, although the Colossal Squid is likely to be even larger.

Mollusks are triploblastic protostomes. The principal body cavity is a blood-filled hemocoel, with an actual coelom present but reduced to vestiges around the hearts, gonads, and metanephridia (kidney-like organs). The body is divided into a head, often with eyes or tentacles, a muscular foot and a visceral mass housing the organs. Covering the body is a thick sheet called the mantle, which in most forms secretes a calcareous shell.

Mollusks have a mantle, which is a shell-like outer cover, and a muscular foot that is used for motion. Many mollusks have their mantle produce a calcium carbonate external shell and their gill extracts oxygen from the water and disposes waste. All species of the phylum Mollusca have a complete digestive tract that starts from the mouth to the anus. Many have a radula, mostly composed of chitin, in the mouth, which allows then to scrape food from the surface by sliding back and forth. Mollusks also have a coelom, made from cell masses, where all organs are suspended. Unlike Coelomates, mollusks lack body segmentation.

Development passes through one or two trocophore stages, one of which (the veliger) is unique to the group. These suggest a close relationship between the mollusks and various other protostomes, notably the Annelids.
Source: Wikipedia Read more about Molluscs
PICTURES (Click to enlarge)
Atlantic Oval Squid picture Octopus picture Snail picture
Atlantic Oval Squid Octopus Snail
Butter clam picture Squid picture Sea Slug picture
Butter clam Squid Sea Slug
Purple Nudibranch picture Atlantic Oval Squid picture Sunrise tellin picture
Purple Nudibranch Atlantic Oval Squid Sunrise tellin
Snail picture Flamingo tongue picture Rough keyhole limpet picture
Snail Flamingo tongue Rough keyhole limpet
Octopus picture Nautilus picture Giant Pacific octopus picture
Octopus Nautilus Giant Pacific octopus
Cuttlefish picture Mollusc picture Clam picture
Cuttlefish Mollusc Clam
Snail picture Flamingo tongue picture Cuttlefish picture
Snail Flamingo tongue Cuttlefish
Purple Ring Top Snail picture Abalone picture Tiger top picture
Purple Ring Top Snail Abalone Tiger top
Olive picture Red Gilled Nudibranch picture Atlantic deer cowrie picture
Olive Red Gilled Nudibranch Atlantic deer cowrie
Channeled top shell picture Common spider conch picture Filose turban picture
Channeled top shell Common spider conch Filose turban
Flame helmet picture Stocky cerith picture Tapestry turban picture
Flame helmet Stocky cerith Tapestry turban
Tapestry turban picture Bullia vittatum picture Common screw shell picture
Tapestry turban Bullia vittatum Common screw shell
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