What are mollusk shells made of?

Answer While not all mollusks possess a shell (notable exceptions include squid, octopi and slugs), those that do secrete the shell from a specialized tissue called the mantle. The shell itself is a compo... Read More »

Top Q&A For: What are mollusk shells made of

How to Identify Mollusk Shells?

The phylum Mollusca contains over 100,000 identified species, making it one of the most diverse and largest phyla of animals, next to arthropods. They are found in almost every ecosystem from the t... Read More »

What are oyster shells made of?

Oyster shells are mostly of calcium carbonate, and because of this have extensive use on land for other purposes. People use oyster shells in gardens for the calcium carbonate, and feed them to bir... Read More »

What are diatom test shells made of?

Diatom tests (the hard shell of the diatom, sometimes called testa, or testae) are composed of almost pure silica. Silica is silicon dioxide, which is written chemically as SiO2. Marine botanists... Read More »

What Kind of Animals Are in the Mollusk Family?

The mollusk family is one of the most diverse groups of animals in the world. The University of California Museum of Paleontology says scientists estimate that 50,000 to 200,000 species belong to t... Read More »