1. Plural of nannoplankton; microscopic marine organisms, typically 2–20 micrometers in size, including coccolithophores and other small phytoplankton that form an important part of ocean food webs.
Usage: scientific/technical; marine biology; usually used in plural form

Examples

• Nannoplanktons are essential primary producers in marine ecosystems.
• The abundance of nannoplanktons in the water sample indicated high nutrient levels.
• Scientists study nannoplanktons to understand ocean productivity and carbon cycling.
• Coccoliths from nannoplanktons accumulate on the ocean floor over millions of years.
• Climate change affects the distribution and diversity of nannoplanktons in polar regions.