Invertebrates.. Some live in water and others live on land and do not have an internal skeleton

Invertebrates are a group in the animal kingdom, some of which live in water (coral reefs, jellyfish and crabs), landfills (many worms, insects, spiders), and another section that jumps or flies. There are no bones in her body.
So it does not have an internal skeleton.
Some of them (arthropods) have an external skeleton.
The group of invertebrates is also divided into divisions, classes, classes, families, varieties and thousands of species.
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