The aquatic organism with prehensile tail is

Options

A. Chamaelon
B. Macaca
C. Exocoetus
D. Hippocampus

Answer

To determine the aquatic organism with a prehensile tail, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the term "prehensile tail":**
A prehensile tail is a type of tail that is adapted for grasping or holding objects. This adaptation allows certain animals to use their tails to manipulate their environment.

2. **Analyze the options provided:**
- **Option A: Chameleon** - Chameleons are primarily terrestrial reptiles and do not live in aquatic environments. Therefore, they cannot be the answer.
- **Option B: Mecca** - This term seems to be a typo or confusion; if it refers to "Mekong giant catfish," they do not have a prehensile tail.
- **Option C: Exocoitus** - Also known as flying fish, they do not possess a prehensile tail.
- **Option D: Hippocampus** - Commonly known as seahorses, they have a prehensile tail that they use to grasp onto objects like seaweed or coral for stability and protection.

3. **Identify the correct answer:**
Based on the analysis, the only aquatic organism listed that has a prehensile tail is the Hippocampus (seahorse).

### Final Answer:
The aquatic organism with a prehensile tail is **Option D: Hippocampus**.

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