Assertion: shark's adaptation | /r/HasProperty | unique
Facets:
Source sentences:
text: Bull sharks can survive in both freshwater and saltwater, as they have a unique adaptation that their kidneys are capable of evacuating a large amount of salty blend through their bloodstreams called urea.
text: But to be at the top of the food chain, sharks have had to develop many unique adaptations that allow them to hunt without being hunted.