Modifiers matching plankton:

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

Simple categories matching gelatinous:

• organism,
• invertebrate,
• zooplankton,
• predator,
• prey,
• animal,
• creature,
• plankton,