Assertion: flashlight fish | /r/CapableOf | use their natural glow
Facets:
value: to see each other
type: PURPOSE
Source sentences:
text: By observing wild fish with highly sensitive cameras and by testing on fish they caught, Gruber, Phillips, and the team demonstrated that flashlight fish can use their natural glow to see each other well enough to keep their schools going even during the darkest, moon-free nights.