The researchers filmed the octopus collecting coconut half-shells from the sea floor that had been discarded by humans. They were then carried up to  and arranged around the body of the octopus to form a spherical hiding place similar to a clam-shell.
Researchers documented the octopus collecting discarded coconut halves from the ocean bottom. These shells were later positioned around the octopus’s body, forming a spherical shelter akin to a clamshell.