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Biological Evolution: Unity and Diversity: Vertebrates and Invertebrates
Echinoderms II
Description
Echinoderms II
Echinoderms, which means "spiny skin," are a unique group of invertebrates that live only in marine environments. This group includes sea stars, sea urchins, brittle stars, sea cucumbers, and feather stars. Their bodies are supported by a skeleton made of calcium ...
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Transcript
As we know, echinoderms are marine animals characterized by their spiny skin and a diverse range of lifestyles. They live only in marine environments, never on land or in freshwater, and are an important part of ocean ecosystems.
Scientists divide echinoderms into two groups. Some, like feather stars, stay fixed in one place, clinging to r...
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