Chitosan is a polymer found in the bodies of crustaceans — like shrimp or squid. Bogusz said that they used the chitosan extracted from the inner shells of squid because it doesn’t cause the ...

Though they lack a shell, squid and octopuses all have a kind of "inner ear" containing a tiny hard stone that helps them to balance and orient themselves. (Humans have similar tiny crystals in ...

He peels back the squid’s hard inner shell, or “pen,” to reveal a pair of nerve fibers, called axons, extending from the severed end of the squid into its well-muscled mantle.

500 million years ago, back in the Cambrian Period, a pioneering little mollusk floated up off the ocean floor. It had developed a way to use its defensive shell for a whole new purpose - buoyancy.

This is a guest post by Dr. Danna Staaf, a science writer with a PhD in marine biology from Stanford University. Her first book, Squid Empire: The Rise and Fall of the Cephalopods, chronicles the ...

Simulation of the squid model. Credit: Physical Review X (2025). DOI: 10.1103/PhysRevX.15.021064 "In other growing systems, such as the cells in chicken eyes, studies have previously seen ...