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Biological Evolution: Unity and Diversity: Vertebrates and Invertebrates
Mollusks
Description
Mollusks
Mollusks are a diverse group of invertebrate animals that live in many environments, from oceans and freshwater to land. This group includes snails, clams, oysters, squids, and octopuses. Mollusks typically have soft bodies, and many are protected by a hard shell made o...
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Transcript
While walking along the beach, you might spot seashells. They may look empty now, but many were once homes for mollusks, soft-bodied animals with no bones inside their bodies.
Even though mollusks look different, they share a similar body plan. All mollusks have a soft body, a mantle, and a muscular foot.
In many mollusks, the mantle...
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