Name the larval stage found in the life history of star fish and sea urchin.

Explanation

To answer the question regarding the larval stages found in the life history of starfish and sea urchin, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Larval Stages**:
- Larval stages are the immature forms of organisms that develop after the egg stage. They undergo various transformations before reaching adulthood.

2. **Identifying the Organisms**:
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