What is Aristotle lantern? Give its function.

Explanation

**Step-by-Step Solution:**

1. **Definition of Aristotle's Lantern**: Aristotle's lantern is a specialized feeding structure found in sea urchins, which are marine animals belonging to the phylum Echinodermata.

2. **Structure**: The Aristotle's lantern consists of a complex arrangement of calcareous plates and muscles that form a unique open structure. This structure allows for the formation of a mouth aperture.

3. **Function**: The primary function of Aristotle's lantern is food capture. It enables sea urchins to graze on algae and other organic materials on the ocean floor.

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