Assertion: humpback whale's fluke | /r/CapableOf | serrate trailing edge
Facets:
Source sentences:
text: The flukes have a concave, serrated trailing edge, and the dorsal fin is low and broad based (usually sitting on a hump).
text: The fluke can measure up to five metres across and the colouration and serrated trailing edge, is unique to each animal, which enables individuals to be identified.