Assertion: dolphin's blowhole | /r/HasProperty | single
Facets:
Source sentences:
text: The bottlenose dolphin has a single blowhole located on the dorsal surface of the head consisting of a hole and a muscular flap.
text: They have a single blowhole and their flippers are pointed.
text: Dolphins (along with all toothed whales) are born with a single blowhole used for breathing compared to baleen whales which are born with two blowholes.
text: Unlike some whale species that have two blowholes, dolphins are born with a single blowhole.
text: A dolphin breathes through a single blowhole on the top surface of its head.
text: Covered by a muscular flap that provides a water-tight seal, dolphins have a single blowhole on the surface of the head for breathing.