Assertion: shark | /r/HasAspect | keen olfactory senses
Facets:
value: unlike bony fish
type: OTHER
value: with some species
type: OTHER
Source sentences:
text: Sharks have keen olfactory senses, located in the short duct (which is not fused, unlike bony fish) between the anterior and posterior nasal openings, with some species able to detect as little as one part per million of blood in seawater.