Assertion: sailfish | /r/CapableOf | spread out fin
Facets:
value: to enhance the maneuverability
type: PURPOSE
value: to enhance stability
type: PURPOSE
Source sentences:
text: The sailfish spreads out those fins to enhance the maneuverability or stability but usually depresses them into the fin grooves during active swimming, while all the fins lie away from the body and do not rest on the body during movement in case of the swordfish  .