Assertion: whale's fluke | /r/HasProperty | tail
Facets:
Source sentences:
text: When a whale slaps its fluke (tail) against the water, this is to scare smaller fish, as it forages for food.
text: Pec-slapping and tail slapping involve the whale coming to the surface and slapping either its pectoral fins (side fins) or flukes (tail fins) against the surface, making a huge splash.
text: A whale’s flukes are its tail fins, which are composed of flesh and not anchored by skeletal anatomy.