Assertion: breadcrumb sponge | /r/HasProperty | halichondria panicea
Facets:
Source sentences:
text: The breadcrumb sponge (Halichondria panicea) is very hard and attaches to rocks, but if you tried to pick it up it would crumble like stale bread.
text: Breadcrumb Sponge (Halichondria panicea)