Choanocytes are peculiar cells found in ctenophorans/sponges.

Explanation

To answer the question about choanocytes and their association with ctenophorans or sponges, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Choanocytes**:
- Choanocytes are specialized cells that play a crucial role in the feeding mechanism of certain aquatic animals.

2. **Identifying the Organisms**:
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