Poisonous sea snake possess a

Options

A. (a) Compressed tail
B. (b) Printed tail
C. (c) Depressed tail
D. (d) Conical tail

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the type of tail possessed by poisonous sea snakes, specifically referring to their adaptations for living in marine environments.

2. **Identifying the Sea Snake**: The poisonous sea snake is scientifically known as Hydrophis. It is important to note that these snakes are adapted to life in water and are often found in coral reefs.

3. **Recognizing Key Features**: One of the key features of poisonous sea snakes is their body shape. Unlike land snakes, sea snakes have a flattened or compressed body which aids in swimming.

4. **Analyzing the Options**: The options provided are:
- A) Compressed tail
- B) Printed tail
- C) Depressed tail
- D) Conical tail

5. **Evaluating Each Option**:
- **Option A (Compressed tail)**: This is consistent with the overall body shape of the sea snake, which is adapted for swimming.
- **Option B (Printed tail)**: This option does not relate to any known tail type of sea snakes.
- **Option C (Depressed tail)**: This does not accurately describe the tail of a sea snake.
- **Option D (Conical tail)**: This is also not characteristic of sea snakes.

6. **Conclusion**: Based on the analysis, the correct answer is **A) Compressed tail**. This reflects the adaptation of the sea snake for its aquatic lifestyle.