Pollution , climate changes, over - exploitation by human etc are responsible for changes in the ecosystem . Change in an ecosystem is responsible for depletion in biodiversity which directly or indirectly affects human beings and their surrounding . So it is important to conservation by which we can conserve our biodiversity .
Name the National Aquatic Animals of India ?

Options

A. Sea - horse
B. Gangetic shark
C. Blue whale
D. River dolphin

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the name of the National Aquatic Animal of India. It also provides context about the importance of biodiversity and the threats it faces due to pollution, climate change, and human exploitation.

2. **Identifying Options**: The question implies that there are multiple options to choose from. We need to evaluate each option to determine which one is recognized as the National Aquatic Animal of India.

3. **Evaluating Options**:
- **Option 1: Seahorse**: This is a small marine fish but is not recognized as the National Aquatic Animal of India.
- **Option 2: Gangetic Shark**: Although this species is critically endangered, it is not the National Aquatic Animal of India.
- **Option 3: Blue Whale**: While this is a significant marine mammal, it is not classified as the National Aquatic Animal of India.
- **Option 4: River Dolphin**: This is the correct answer, as the River Dolphin is officially recognized as the National Aquatic Animal of India.

4. **Conclusion**: After evaluating all the options, the River Dolphin is confirmed to be the National Aquatic Animal of India.

### Final Answer:
The National Aquatic Animal of India is the **River Dolphin**.

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