New research sheds light on the remarkable evolutionary journey of squid and cuttlefish, revealing that these highly intelligent cephalopods originated deep in the ocean over 100 million years ago. This groundbreaking study, based on newly sequenced genomes and global datasets, uncovers their unique survival strategy during mass extinction events by retreating to oxygen-rich deep-sea refuges. Their subsequent rapid diversification into shallow-water habitats post-extinction offers a compelling narrative of adaptation and resilience.
<p>Science <a href="https://www.sciencedaily.com/releases/2026/03/260331001100.htm">news</a>:</p>
<blockquote><p>Scientists have finally cracked a long-standing mystery about squid and cuttlefish evolution by analyzing newly sequenced genomes alongside global datasets. The research reveals that these bizarre, intelligent creatures likely originated deep in the ocean over 100 million years ago, surviving mass extinction events by retreating into oxygen-rich deep-sea refuges. For millions of years, their evolution barely changed—until a dramatic post-extinction boom sparked rapid diversification as they moved into new shallow-water habitats. ...</p></blockquote>
Editorial Analysis
The deep-sea survival and subsequent diversification of cephalopods offers a powerful metaphor for strategic resilience in high-stakes environments like defense and cybersecurity. The ability to identify and leverage 'oxygen-rich refuges'âwhether secure networks, hardened systems, or robust backup protocolsâduring critical threats is paramount for continuity. Furthermore, their post-extinction capacity for rapid diversification into new 'habitats' underscores the necessity for agile adaptation and innovation to thrive after disruptive events, rather than merely survive them.
