Re:The Cuttlefish, a Master of Camouflage, Reveals a New Trick
by tzs on Thursday February 15, 2018 @08:14PM
(#16389190)
They are also used as a calcium supplement for animals:
"Today, cuttlebones are commonly used as calcium-rich dietary supplements for caged birds, chinchillas, hermit crabs, reptiles, shrimp, and snails. It is not for human consumption"
"Today, cuttlebones are commonly used as calcium-rich dietary supplements for caged birds, chinchillas, hermit crabs, reptiles, shrimp, and snails. It is not for human consumption"
https://en.wikipedia.org/wiki/Cuttlebone#Human_uses