Assertion: shark's liver | /r/HasAspect | low-density oils
Facets:
Source sentences:
text: Their cartilaginous skeletons are much lighter than true bone and their large livers are full of low-density oils, both helping them to be buoyant.
text: Combine that with large livers that are filled with low density oils, and it’s little wonder they are as buoyant as they are.