Assertion: sea urchin | /r/CapableOf | use their spines
Facets:
value: to wear depressions
type: PURPOSE
value: for defense
type: PURPOSE
Source sentences:
text: They wander the sea floor using their spines and a row of tube feet as locomotion.
text: Sea urchins live on the ocean floor, usually on hard surfaces, and use the tube feet or spines to move about.
text: Sea urchins use their spines for defense, prey capture, and locomotion.
text: Sea urchins use their spines to wear away depressions in rocks, which gives them a protected place to hide.
text: Sea urchins may sometimes appear to be inanimate (or dead), but they can actually move rapidly across surfaces using their spines.
text: They use there spines to make sure no fish eat them, and their mouths are on the bottom of them.