Assertion: shark | /r/HasAspect | special retina
Facets:
Source sentences:
text: Sharks that are part of the Laminid group (including great whites, mako, and porbeagle sharks) are able to have a special retina that warms their eyes and brains, which helps them to better detect movement and improve resolution on the images that they see.
text: And sharks have one more special sense that other fish don't have: a specialized ability to detect the very faint electrical fields that living organisms emit.