Category Nuances for null:

• natural,
• planktonic,
• larger,
• aquatic,
• predatory,
• boneless,
• useful,
• poisonous,
• harmful,
• marine,
• bodied,
• dangerous,
• simple,
• floating,
• entire,
• primitive,
• benthic,
• diverse,
• familiar,
• underwater,
• coastal,
• model,
• random,
• modern,
• delicate,
• dead,
• active,
• gelatinous,
• large,
• creepy,
• exotic,
• transparent,
• small,
• wonderful,
• venomous,
• amazing,
• soft,
• unwanted,
• lower,
• macroscopic,
• fragile,
• cool,
• real,
• low,
• higher,
• multicellular,
• deadly,
• moving,
• microscopic,
• saclike,
• visual,
• minute,
• complex,
• animal,
• symmetrical,
• colonial,
• invertebrate,
• pelagic,

Simple Categories for null:

• animal,
• critter,
• eukaryote,
• cnidarian,
• organism,
• creature,
• hydrozoan,
• beast,
• prey,
• object,
• part,
• fauna,
• pest,
• invertebrate,
• thing,
• predator,
• plankton,
• stuff,
• zooplankton,