In the Line of Fire: Debris Throwing by Wild Octopuses

@article{GodfreySmith2021InTL,
  title={In the Line of Fire: Debris Throwing by Wild Octopuses},
  author={Peter Godfrey‐Smith and D. Scheel and Stephanie Chancellor and Stefan Linquist and Matthew Lawrence},
  journal={bioRxiv},
  year={2021}
}
Wild octopuses at an Australian site frequently propel shells, silt, and algae through the water by releasing these materials from their arms while creating a forceful jet from the siphon held under the arm web. These “throws” occur in several contexts, including interactions with conspecifics, and material thrown in conspecific contexts frequently hits other octopuses. Some throws appear to be targeted on other individuals and play a social role, as suggested by several kinds of evidence. Such… 

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