Assertion: long spined sea urchin | /r/HasProperty | threat
Facets:
value: to tasmanian ecosystems
type: TRANSITIVE-OBJECT
Source sentences:
text: The long spined sea urchin is a threat to Tasmanian ecosystems as it feeds on the marine algae leaving large barren areas on the sea floor and depriving abalone, rock lobster and other species of their feed and habitat.