Ten cephalopods: explore shapes and colours in real photographs. An editorial selection, not a scientific ranking. Attribution: 1. File:Octopus2.jpg; albert kok; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Octopus2.jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo. 2. File:Enteroctopus dolfeini.jpg; NOAA/R. N. Lea [1]; Public domain; ; https://commons.wikimedia.org/wiki/File:Enteroctopus_dolfeini.jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo. 3. File:Mimic Octopus 2.jpg; Steve Childs; CC BY 2.0; https://creativecommons.org/licenses/by/2.0; https://commons.wikimedia.org/wiki/File:Mimic_Octopus_2.jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo. 4. File:Coconut Octopus (Amphioctopus marginatus) (6079648725).jpg; Bernard DUPONT from FRANCE; CC BY-SA 2.0; https://creativecommons.org/licenses/by-sa/2.0; https://commons.wikimedia.org/wiki/File:Coconut_Octopus_(Amphioctopus_marginatus)_(6079648725).jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo. 5. File:Sepia común (Sepia officinalis), Parque natural de la Arrábida, Portugal, 2020-07-21, DD 62.jpg; Diego Delso; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File:Sepia_com%C3%BAn_(Sepia_officinalis),_Parque_natural_de_la_Arr%C3%A1bida,_Portugal,_2020-07-21,_DD_62.jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo. 6. File:GiantCuttlefish6.jpg; Jacob Bridgeman; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:GiantCuttlefish6.jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo. 7. File:Ascarosepion pfefferi 1.jpg; Jenny (JennyHuang) from Taipei; CC BY 2.0; https://creativecommons.org/licenses/by/2.0; https://commons.wikimedia.org/wiki/File:Ascarosepion_pfefferi_1.jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo. 8. File:Calamar de arrecifes (Sepioteuthis lessoniana), Nosy Iranja, Madagascar, 2025-09-17, DD 134.jpg; Diego Delso; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File:Calamar_de_arrecifes_(Sepioteuthis_lessoniana),_Nosy_Iranja,_Madagascar,_2025-09-17,_DD_134.jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo. 9. File:Squid colors 2.jpg; Betty Wills; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File:Squid_colors_2.jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo. 10. File:Nautilus pompilius (detail).jpg; Hans Hillewaert; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File:Nautilus_pompilius_(detail).jpg; Whole photograph fitted within portrait canvas; no animal cropped; title and caption outside photo.