강이나 바다의 물속에서 스스로 운동 능력이 없거나 약하여 물결에 따라 떠다니는 미세한 생물.
Small and microscopic organisms that drift or float in the sea or fresh water, serving as the foundation of the aquatic food web.
예문:
"The survival of many whale species depends on the seasonal abundance of plankton."
"Scientists collected water samples to analyze the diversity of plankton in the coral reef."
"Agricultural runoff can cause an overgrowth of plankton, leading to oxygen depletion in lakes."