Assertion: narwhal's fin | /r/HasProperty | evolutionary adaptation
Facets:
value: possibly
type: DEGREE
Source sentences:
text: Narwhals do not have a dorsal fin, possibly an evolutionary adaptation to swimming easily under ice, to facilitate rolling, or to reduce surface area and heat loss.
text: Narwhals do not have a dorsal fin, possibly an evolutionary adaptation to swimming easily under ice, to facilitate rolling, or to reduce surface area and heat loss.
text: "Narwhals do not have a dorsal fin, possibly an evolutionary adaptation to swimming easily under ice.
text: Narwhals do not have a dorsal fin, possibly an evolutionary adaptation to swimming easily under ice.