Assertion: flounder's eye | /r/CapableOf | migrate to other side of their head
Facets:
value: as a part of the metamorphosis
type: PURPOSE
Source sentences:
text: These fish begin as free-swimming larvae and juveniles until one eye begins to migrate to the other side of their head as a part of the metamorphosis that occurs as a flatfish matures to adulthood and settles to the bottom.