Assertion: octopus's shell | /r/HasProperty | hard
Facets:
Source sentences:
text: Some octopuses use venom of varying levels of toxicity, which they inject into its prey with a beak similar to a bird's; they can also use their beaks to penetrate and crack hard shells.
text: If needed, octopuses break apart hard shells with their beaks.
text: Whereas an octopus has no hard shell or bone in its body, squid have a stiff backbone-like structure called a pen.