What are some examples of marine mollusks?
Sophia Hammond
Updated on March 13, 2026
What are some examples of marine mollusks?
Mollusks are the largest marine phylum, comprising about 23% of all known marine organisms. Mollusks include clams, scallops, oysters, mussels, limpets, chitons, and snails (snails are gastropods—the account for about 80% of invertebrate species).
What are the 4 major molluscs?
Types of Mollusks
- Gastropods include snails and slugs. They use their foot to crawl.
- Bivalves include clams, scallops, oysters, and mussels. As their name implies, they have two parts of their shell, which can open and close.
- Cephalopods include the octopus and squid.
Which Mollusca is entirely Marine?
Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats….Mollusca.
| Mollusca Temporal range: | |
|---|---|
| (unranked): | Protostomia |
| (unranked): | Spiralia |
| Superphylum: | Lophotrochozoa |
| Phylum: | Mollusca Linnaeus, 1758 |
What are the 3 main mollusks?
The three major groups of mollusks are gastropods, bivalves, and cephalopods (SEF ul o pods). The largest group is the gastropods. These are mollusks like snails and slugs that have just one shell or no shell at all. Gastropods creep along on their broad foot.
What are the 3 groups of mollusk?
What is the order of Mollusca?
Phylum Mollusca is classified into seven classes;
- GASTROPODA (single shelled cowries, cones etc)
- BIVALVIA ( two shelled like clams, mussels etc)
- APLACOPHORA (solenogasters)
- MONOPLACOPHORA (segmented limpets)
- POLYPLACOPHORA ( or Amphineura as it was earlier called- Chitons)
- SCAPHOPODA (tusk shells)
Which class of mollusks all have tentacles?
Class Cephalopoda. The cephalopods are molluscs with large heads and tentacles. Examples of cephalopod molluscs include squid, octopus, cuttlefish, and nautilus (Fig. 3.65).
