Assertion: shark's retina | /r/HasProperty | exposed in darkness
Facets:
value: to reflect light
type: PURPOSE
Source sentences:
text: In addition, the Tiger shark, like many other sharks, has a mirror-like covering behind their retina called ‘tapetum lucidum’ that is exposed in darkness to reflect light that has already been seen by the retina back at it as to allow the shark to see better.