They’re cuttlebones from cuttlefish. Lightweight, firm, yet brittle, they are the internal shell that runs the length of the body. Each is the remnant of a single cuttlefish, which typically ...

Get Instant Summarized Text (Gist) Cuttlefish adapt their body shape and color to camouflage themselves when hunting prey. Observations of 98 cuttlefish off the coast of New Guinea revealed four ...