Assertion: horseshoe crab's compound eye | /r/HasProperty | eye
Facets:
Source sentences:
text: Compound eyes are eyes that consist of several thousand separate visual structures, each of which has a lens and photoreceptor cells.
text: The horseshoe crab has a compound eye on each side of the prosoma, five eyes on the top of the carapace, and two eyes on the underside, close to the mouth, making a total of nine eyes.