Assertion: humpback whale's tail | /r/Synonym | fluke
Facets:
Source sentences:
text: Additionally, a Humpback’s tail (called a fluke) is as unique as a fingerprint.
text: Swimming: Like other whales, Humpbacks swim by moving their tail (called flukes) up and down.
text: Every humpback whale has a unique marking on their tail (their tail is also called a fluke).