Name the locomotory organs in echinoderms.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the locomotory organs in echinoderms. Locomotory organs are those structures that enable an organism to move from one place to another.

2. **Defining Echinoderms**: Echinoderms belong to the phylum Echinodermata. They are multicellular organisms primarily found in marine environments.

3. **Identifying the Locomotory Organ**: The primary locomotory organ in echinoderms is the "tube feet."

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