#echinoderm  marine invertebrates with tube feet and calcite-covered five-part radially symmetrical bodies
  supertype:  invertebrate  any animal lacking a backbone or notochord; the term is not used as a scientific classification
  subtype:  starfish  brittle_star  basket_star  sea_urchin  crinoid  sea_cucumber
  part:  water_vascular_system  ambulacrum  tube_foot
  member of:  phylum_Echinodermata__Echinodermata  radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers
     member of:  kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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