Category Nuances for tube_worm:

• larger,
• marine,
• extraordinary,
• sedentary,
• exotic,
• resident,
• small,
• sessile,
• bizarre,
• invertebrate,
• light,
• unique,
• immobile,
• complex,
• extra,
• benthic,
• hard,
• unknown,
• multicellular,
• higher,

Simple Categories for tube_worm:

• animal,
• organism,
• critter,
• invertebrate,
• creature,
• pest,
• prey,
• inhabitant,
• worm,
• group,
• surface,