Sea Cow is a

Options

A. Fish
B. Reptile
C. Bird
D. Mammal.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Sea Cow":**
- The term "sea cow" refers to a group of marine mammals known as "serenians."

2. **Identifying Characteristics:**
- Sea cows are fully aquatic, meaning they live entirely in water.
- They are herbivorous, which means they primarily feed on plants.

3. **Habitat:**
- Sea cows inhabit various aquatic environments, including swamps, rivers, and marine waters.

4. **Physical Features:**
- They have a large fusiform body shape, which helps them swim efficiently by reducing drag in the water.
- Their heavy bones act as ballast, aiding in their ability to swim.
- They possess blubber, a layer of fat that helps counteract buoyancy, allowing for easier movement in water.

5. **Eliminating Incorrect Options:**
- **Fish:** While sea cows are aquatic, they are not fish; they belong to the mammal category.
- **Reptiles:** Sea cows do not belong to the reptile class.
- **Birds:** Birds are not aquatic mammals, so this option is also incorrect.

6. **Conclusion:**
- Based on the characteristics and habitat of sea cows, the correct classification is that they are mammals.

**Final Answer:**
Sea Cow is a mammal.

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