Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. They are highly diverse, not just in size and anatomical structure, but also in behavior and habitat, as …

Dec 19, 2025 · mollusk, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.

Discover the varied types of mollusks and their ecological roles in this article, from pearl-producing oysters to the unique sea butterfly and even the venomous blue-ringed octopuses. Mollusks …

Dec 1, 2025 · Mollusks are the dominant invertebrate phylum in marine habitats, making up approximately 23% of all named marine species. They are also found in freshwater systems and …

Mollusks inhabit various aquatic and terrestrial environments, including oceans, freshwater bodies, and land. Mollusks exhibit a wide range of anatomical features and adaptations, but they share several …

The meaning of MOLLUSK is any of a large phylum (Mollusca) of invertebrate animals (such as snails, clams, or squids) with a soft unsegmented body usually enclosed in a calcareous shell; broadly : …

May 27, 2024 · A mollusk is an invertebrate with an unsegmented soft body that is often covered partially or entirely with a calcareous shell and belongs to the Mollusca phylum.

Jul 17, 2025 · Mollusks or Molluscs are a group of soft-bodied invertebrates distributed across marine, freshwater, and terrestrial habitats. They belong to the phylum Mollusca, the second largest after …

Mar 8, 2022 · Molluscs are invertebrates, which means they are animals that do not have a backbone. They come in all shapes and sizes, and some of them grow external shells to protect their soft …

Phylum Mollusca is the predominant phylum in marine environments. It is estimated that 23 percent of all known marine species are mollusks; there are over 75,000 described species, making them the …