Assertion: diver's fin | /r/AtLocation | foot
Facets:
Source sentences:
text: A scuba diver primarily moves underwater by using fins attached to the feet, but external propulsion can be provided by a diver propulsion vehicle, or a sled pulled from the surface.
text: A scuba diver moves underwater by using fins attached to the feet; external propulsion can be provided by a diver propulsion vehicle, or a towboard pulled from the surface.