Warning: This video contains footage of an octopus hiding under a coconut shell that it has carried around just in case it needed to hide from something. Watching this footage may contradict your previous assumptions about animal tool use, and may be too adorable for some viewers.
National Geographic: Octopuses Carry Coconut Shells as Instant Shelters
via Tool-using animals: Now with 100% more invertebrates!.
[...] Tool-using animals: Now with 100% more invertebrates! [...]