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"Odkryjme tajemství" těchto nádherných živočichů. Vkládejte fotografie, nové informace/studie a videa týkající se všech druhů chobotnic.

Internetové stránky:
Octopus World

Internetová fóra:
• https://www.tonmo.com/

• Sy Montgomery: Mají chobotnice duši?
• Peter Godfrey-Smith: Other Minds: The Octopus, the Sea, and the Deep Origins of Consciousness
• Roger Hanlon, Mike Vecchione, Louise Allcock: Octopus, Squid, and Cuttlefish: A Visual, Scientific Guide to the Oceans’ Most Advanced Invertebrates
• Eugene Linden: The Octopus and the Orangutan: New Tales of Animal Intrigue, Intelligence, and Ingenuity

Máte k tomu co říct? Vložte se do diskuze.
??? --- 15:51:28 15.5.2020
Squids’ colour comes from small bags of pigment in their skin called chromatophores. These are under muscular control - when their muscles are relaxed, the chromatophores are tiny dots in the midst of pale expanses of unpigmented skin, but when the muscles contract, the chromatophores are stretched out to cover a much wider area. The overall effect of this is to make the squid appear darker. When a squid dies, the muscles on the chromatophores all relax, and the chromatophores all become tiny dots.
Why do squids lose their color when they die? - Quora
??? --- 15:33:03 15.5.2020
???: ja ji mela za nejakeho “albina”, ale pokud je to pred smrti tak o to nadhernejsi to je.
??? --- 15:31:10 15.5.2020
???: Pokud me znalosti jsou presne, tak to je tesne pred smrti, ne?
??? --- 15:29:59 15.5.2020
KEVIN00: nemuzu si pomoct, ale tahle je nejnadhernejsi:)
??? --- 15:27:40 15.5.2020
Snad jsou akceptovatelni i dalsi hlavonozci.
??? --- 15:26:55 15.5.2020
??? --- 15:25:21 15.5.2020
??? --- 2:55:41 15.5.2020
Octopus, Squid, and Cuttlefish: A Visual, Scientific Guide to the Oceans’ Most Advanced Invertebrates by Roger Hanlon
KEVIN00 --- 12:27:25 9.5.2020
Fossil reveals evidence of 200 million-year-old ‘squid’ attack
Scientists have discovered the world’s oldest known example of a squid-like creature attacking its prey, in a fossil dating back almost 200 million years.