Category Nuances for tube_worm:

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

Simple Categories for tube_worm:

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