In a fascinating glimpse into octopus behavior, researchers have documented female gloomy octopuses (Octopus tetricus) engaging in what appears to be deliberate projectile throwing — targeting other octopuses with shells, silt, and algae propelled by jets of water from their siphons. A peer-reviewed 2022 study in PLOS ONE analyzed around 21 hours of underwater footage from Jervis Bay, Australia (2015–2016), revealing dozens of these “throws,” especially during social encounters such as fights, a

Just how smart are octopuses? One is put to the test in this watch-and-learn challenge. | National Geographic Animals

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Happy #WorldOctopusDay! Let’s celebrate with some octo-anatomy. #cephalopod #octopus #mollusk #marinescience #octopuslove #tentacle #marinelife #octoodyssey | CHANGING SEAS