Why do fishes die when taken out of water ?

Explanation

### Step-by-Step Solution:

1. **Understanding Fish Respiration**: Fish breathe using gills, which are specialized organs that extract oxygen from water. They are adapted to utilize oxygen that is dissolved in water.

2. **Oxygen in Water vs. Air**: In water, oxygen is present in a dissolved form, which fish can absorb through their gills. However, when fish are taken out of water, they are exposed to atmospheric air, where oxygen exists in a gaseous form.

3. **Limitations of Gills**: Fish gills are not designed to extract oxygen from air. They cannot convert atmospheric oxygen into a form that can be used for respiration. This means that when fish are out of water, they cannot access the oxygen they need to survive.

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