Ten famous sea stacks: coastal towers in Scotland and Ireland, rocky remnants in Australia and Iceland, Ko Tapu in Thailand and Haystack Rock in Oregon. The Twelve Apostles are represented by a photograph of one stack in the group. Old Man of Hoy: Erica Hume; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:Old_Man_of_Hoy,_Orkney.jpg; resized and fitted to portrait frame; derived image retains the source license. Old Man of Stoer: Dontpanic; Public domain (copyright holder dedication); https://commons.wikimedia.org/wiki/File:Old_man_of_stoer.jpg; https://commons.wikimedia.org/wiki/File:Old_man_of_stoer.jpg; resized and fitted to portrait frame; derived image retains the source license. Am Buachaille: Richard Webb; CC BY-SA 2.0; https://creativecommons.org/licenses/by-sa/2.0/; https://commons.wikimedia.org/wiki/File:Am_Buachaille_-_geograph.org.uk_-_7872233.jpg; resized and fitted to portrait frame; derived image retains the source license. The Totem Pole: Ed Dunens; CC BY 2.0; https://creativecommons.org/licenses/by/2.0/; https://commons.wikimedia.org/wiki/File:The_Totem_Pole_%2835113881932%29.jpg; resized and fitted to portrait frame; derived image retains the source license. Ball's Pyramid: Fanny Schertzer; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:Ball%27s_Pyramid_North.jpg; resized and fitted to portrait frame; derived image retains the source license. Dun Briste: Michael Deligan; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:Dun_Briste_Sea_Stack_of_Downpatrick_Head.jpg; resized and fitted to portrait frame; derived image retains the source license. Reynisdrangar: Spike; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:Reynisdrangar_01.jpg; resized and fitted to portrait frame; derived image retains the source license. Ko Tapu: HutheMeow; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:Khao_Tapu.jpg; resized and fitted to portrait frame; derived image retains the source license. Haystack Rock: Euthman; CC BY 4.0; https://creativecommons.org/licenses/by/4.0/; https://commons.wikimedia.org/wiki/File:Haystack_Rock%2C_Cannon_Beach%2C_Oregon%2C_USA%2C_14_Aug_2025.jpg; resized and fitted to portrait frame; derived image retains the source license. Twelve Apostles: Jacquelinelr22; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:12_Apostles%2C_Australia.jpg; resized and fitted to portrait frame; derived image retains the source license.