Assertion: dolphin's eye | /r/CapableOf | lack lens
Facets:
value: despite river dolphins
type: OTHER
Source sentences:
text: Despite having small eyes (Ganges and Indus river dolphins’ eyes even lack a lens), river dolphins navigate muddy waters with ease thanks to exquisite sonar—perhaps the best among all the cetaceans.
text: Although its eye lacks a lens (this species is also referred to as the "blind dolphin"), the dolphin still uses its eye to locate itself.