What is spawn?

Explanation

**Step-by-Step Solution:**

1. **Definition of Spawn**: Spawn refers to the process of laying eggs by certain animals, particularly in aquatic environments. It is commonly associated with fish and amphibians.

2. **Mass Egg Laying**: During spawning, a female fish or amphibian releases a large number of eggs, often numbering in the thousands (e.g., 2,500 to 3,000 eggs).

3. **Gelatinous Coating**: The eggs are typically covered with a gelatinous material. This coating serves to protect the eggs from environmental threats and predation.

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