Argonaut octopuses are enigmatic—down to their self-made ‘shells’
Eight-armed, pink-spotted argonauts live what appears to be a mysterious life. Unlike other octopuses, they spend their days floating near the surface of tropical waters, detaching their arms to have sex, and curling up in a milky white case. And that’s only what we’ve observed in the wild so far. But through studying argonaut genomes,…