Is Australia a (Biogeographic) Island?

I was always taught there were seven continents, Australia being one of them. However, I've been doing this long enough to know many of my international viewers might've been taught something else; that Australia is an island within the continent of Oceania. This has in turn generated a lot of confusion surround Australia and its status as a landmass. Of course as we all know, these terms are meaningless, which is why lately we've been using biogeographic realms instead. I hope by using these alternative units for dividing the earth, we might finally get to an answer as to whether Australia is an island! Support me on Patreon here: https://www.patreon.com/atlaspro Follow me on Twitter @theatlaspro Sources / Further Reading https://socialsci.libretexts.org/Bookshelves/Geography_(Human)/Book%3A_World_Regional_Geography_(Finlayson)/10%3A_Oceania/10.03%3A_Biogeography_in_Australia_and_the_Pacific https://www.cambridge.org/core/books/abs/biogeography-of-australasia/biogeography-of-australia/D7A01EE3EB889451708C7EF4D47FB5AB https://books.google.com/books?hl=en&lr=&id=v7_nCAAAQBAJ&oi=fnd&pg=PA9&dq=biogeography+of+australia&ots=sqBeL5VmyJ&sig=BKG4de8x4c9y4M4KJyHmfVuMIQA#v=onepage&q=biogeography%20of%20australia&f=false https://link.springer.com/article/10.1007/BF01454359 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0001858#:~:text=Djarthia%20is%20therefore%20the%20oldest%20known%20Australian%20crown%2Dgroup%20marsupial,oldest%20anywhere%20in%20the%20world. https://www.science.org.au/curious/earth-environment/story-our-eucalypts#:~:text=Ancient%20eucalypts%20were%20probably%20similar,and%20a%20fire%2Dprone%20landscapes. https://en.wikipedia.org/wiki/Biogeography#/media/File:Wallace03.jpg https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0001858#:~:text=Djarthia%20is%20therefore%20the%20oldest,marsupial%20by%2030%20million%20years. https://www.researchgate.net/publication/5487466_Australia's_Oldest_Marsupial_Fossils_and_their_Biogeographical_Implications Additional Music: "Deliberate Thought" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ "Infados" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/