Assertion: basking shark's lip | /r/HasProperty | embedded by luminous photophores
Facets:
value: possibly
type: OTHER
Source sentences:
text: This lip was initially thought to be possibly embedded by luminous photophores when the first shark were examined in the early 1980s, which may act as a lure for plankton, while the team examining the second shark in the mid-1980s instead proposed that the lower lip might glow with the white band used as a reflector of sorts, but neither theory has been proven.