Modifiers matching plankton:

• net,
• larger,
• animal,
• large,
• unicellular,
• oceanic,
• pelagic,
• small,
• gelatinous,
• bioluminescent,
• motile,
• crustacean,
• microscopic,
• marine,
• floating,
• abundant,

Simple categories matching microscopic:

• volume,
• information,
• object,
• organism,
• thing,
• fiber,
• parasite,
• space,
• system,
• animal,
• process,
• germ,
• contaminant,
• feature,
• particle,
• epiphyte,
• phenomenon,
• entity,
• body,
• level,
• plant,
• difference,
• filament,
• irregularity,
• imperfection,
• change,
• structure,
• quantity,
• flaw,
• character,
• defect,
• pollutant,
• length,
• property,
• host,
• eukaryote,
• medium,
• macromolecule,
• prey,
• detritus,
• part,
• machine,
• substance,
• particulate,
• deformation,
• substrate,
• mechanism,
• parameter,
• instrument,
• invertebrate,
• arthropod,
• allergen,
• plankton,
• details,
• impurity,
• virus,
• insect,
• procedure,
• characteristic,
• material,
• cell,
• subject,
• roundworm,
• force,
• algae,
• fauna,
• pathogen,
• zone,
• groove,
• pattern,
• state,
• dimension,
• protoctist,
• unit,
• engine,
• creature,
• theory,
• molecule,
• bug,
• form,
• event,
• pest,
• agent,
• critter,
• movement,
• sediment,
• world,
• clue,
• transport,