TIL: Cuttlefish are not completely soft but have a brittle calcium rich internal structure called a "Cuddlebone".
What's really cool is that is also serves the same purpose as a swim-bladder in fish, being able to be filled with gas or liquid to ocntrol buoyancy.
en.wikipedia.o...
What's really cool is that is also serves the same purpose as a swim-bladder in fish, being able to be filled with gas or liquid to ocntrol buoyancy.
en.wikipedia.o...
