microplankton

Minute ocean drifters

Microplankton are tiny organisms that drift in bodies of water, ranging in size from about 20 to 200 micrometers—large enough to be visible under a standard microscope but still too small to swim against currents.

This category includes single-celled algae, protozoa, and the larvae of larger marine animals.

Microplankton form a crucial link in aquatic food chains, serving as food for larger zooplankton and filter-feeding animals while also contributing significantly to oxygen production through photosynthesis.

organisms

diatoms

Single-celled silica algae

protists · larvae · nauplii · algae · amoebae · eukaryotes · unicellular

ecology

food web

Interconnected predator-prey relationships

energy transfer · biomass · filter feeders · predation · detritus · carbon sink · bloom · productivity · chlorophyll · bioindicator

habitat

ocean

Massive saltwater body

upwelling · salinity · coastal waters · open sea · estuary · freshwater · brackish · thermocline · neritic · polar seas

scale

minuscule

Extremely small in size

single-celled · colonial · magnification · sample

research

sampling

Extracting subset for study

oceanography · limnology · marine biology · species diversity · seasonal variation · monitoring · water quality · abundance · distribution

Opposites
organism size

microplanktonblue whale

Largest mammal on Earth

megafauna · whale · giant squid · jellyfish

locomotion/agency in water

microplanktonnekton

Self-propelling aquatic organisms

fish · marine mammals · squid · benthos

ecological role/trophic position

microplanktonapex predator

Unpreyed-upon dominant hunter

whale · baleen whale · filter feeder · megafauna

Family

microscope, micro, microscopic, microbe, plankton, microscopes, microorganism, microcosm, micrometer

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