Assertion: cuttlefish's structure | /r/CapableOf | call the pen
Facets:
Source sentences:
text: Squid have a flexible, feather-shaped structure inside their bodies called the pen, where cuttlefish have a broader internal shell called the cuttlebone.
text: While both may have evolved from the same mollusk ancestor, squids are different in that they all have internal bone-like structures called a pen.
text: The cuttlefish has a larger inner section called the “cattlebone” while the squid has a thin inner bone-like structure called the “pen”.