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Yes. Arthropods are animals that have- during at least one stage in their life- segmented bodies, jointed legs, and an external skeleton called an exoskeleton. All crustaceans have segmented bodies, jointed legs, and exoskeletons. Some crustaceans like barnacles do not appear to have legs or body segments. However, these features can be seen on barnacle larvae. These are barnacles that are not yet adults and have not attached themselves to anything yet. Legs and body segments disappear from adult barnacles because they are not needed. The barnacle is still considered an arthropod because the features that define arthropods can be seen on it during part of its life.

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16y ago

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