Assertion: basking shark's mouth | /r/HasProperty | open
Facets:
Source sentences:
text: It swims with open mouth and feeds passively.
text: There are five long gill slits that almost encircle the head and when the mouth is open, the bright white colour of the cartilage between each slit is highly visible from the surface.
text: The protruding inside of the upper lip is a brilliant silvery-white, which is very visible when the mouth is open.