Extant and ancient cephalopods—including octopuses, squids, extinct ammonites, cuttlefish and nautiluses—have all had to solve the problem of buoyancy, whether they have hard external shells or not.

Research by Rutgers evolutionary biologist Debashish Bhattacharya and his collaborators show that the organisms, known as ...

Contributed by Xing Wang Deng; received June 21, 2024; accepted October 28, 2024; reviewed by Daniel J. Cosgrove, Richard A. Dixon, and Loren Rieseberg ...