Assertion: sea urchin's spine | /r/HasProperty | poisonous
Facets:
value: in some species
type: OTHER
Source sentences:
text: Adult sea urchins are usually well protected against most predators by their strong and sharp spines, which can be poisonous in some species, but when they are damaged they quickly attract lots of fish and other omnivorous animals.
text: Some species have spines that are soft and poisonous.
text: Long, sharp spines are used for protection, and in some species are poisonous.