Tiny aquatic organisms that live in both fresh and saltwater, usually drifting or floating in the water.

जलवायु में तैरने वाले सूक्ष्म जलीय जीव.

English Usage: The plankton concentration in the lake has increased significantly this year.

Hindi Usage: इस साल झील में प्लवक की सांद्रता में काफी वृद्धि हुई है.