Assertion: manta ray's belly | /r/HasProperty | white
Facets:
value: in order to blend
type: PURPOSE
value: always
type: DEGREE
Source sentences:
text: Belly is always white.
text: The latter pattern is the most common and involves countershading, whereby the ray’s back is black and the belly is white in order to better blend with its surroundings and avoid predation.
text: Difference can also be made by their ventral coloration, the reef manta ray has a white belly with often spots between the branchial gill slits and other spots spread across trailing edge of pectoral fins and abdominal region.