Give reason : There are no marine amphibians.

Explanation

### Step-by-Step Solution:

1. **Understanding Amphibians**: Amphibians are a class of animals that typically include frogs, toads, and salamanders. They are known for their ability to live both in water and on land.

2. **Habitat Preference**: Amphibians primarily inhabit freshwater environments such as ponds, lakes, and streams. They are not adapted to live in marine (salty) environments.

3. **Skin Characteristics**: Amphibians have moist, thin skin that plays a crucial role in respiration. Their skin needs to remain moist to facilitate the exchange of gases (oxygen and carbon dioxide) through the skin.

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