Organisms living in open sea are called

Options

A. Planktons
B. Nektons
C. Pelagic
D. Benthos

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the term used to describe organisms that live in the open sea.

2. **Analyzing the Options**:
- **Option A: Planktons** - These are small organisms that float or drift in water currents, primarily found in the upper layers of the ocean.
- **Option B: Nektons** - These are organisms that can swim freely and are not dependent on water currents for movement.
- **Option C: Pelagic** - This term refers to organisms that live in the open sea, away from the shore and the ocean floor.
- **Option D: Benthos** - These are organisms that live on or in the sea bed.

3. **Identifying the Correct Answer**: Since the question specifically asks for organisms that live in the open sea, the term that best fits this description is "pelagic."

4. **Conclusion**: Therefore, the correct answer to the question is **Option C: Pelagic**.