Australian scientists have discovered an octopus in Indonesia that collects coconut shells for shelter — unusually sophisticated behavior that the researchers believe is the first evidence of tool use in an invertebrate animal.
The scientists filmed the veined octopus, Amphioctopus marginatus, selecting halved coconut shells from the sea floor, emptying them out, carrying them under their bodies up to 20m, and assembling two shells together to make a spherical hiding spot.
Julian Finn and Mark Norman of Museum Victoria in Melbourne observed the odd activity in four of the creatures during a series of dive trips to North Sulawesi and Bali in Indonesia between 1998 and last year. Their findings were published yesterday in the journal Current Biology.
“I was gobsmacked,” said Finn, a research biologist at the museum who specializes in cephalopods. “I mean, I’ve seen a lot of octopuses hiding in shells, but I’ve never seen one that grabs it up and jogs across the sea floor. I was trying hard not to laugh.”
Octopuses often use foreign objects as shelter. But the scientists found the veined octopus going a step further by preparing the shells, carrying them long distances and reassembling them as shelter elsewhere.
That’s an example of tool use, which has never been recorded in invertebrates before, Finn said.
“What makes it different from a hermit crab is this octopus collects shells for later use, so when it’s transporting it, it’s not getting any protection from it,” Finn said. “It’s that collecting it to use it later that is unusual.”
The researchers think the creatures probably once used shells in the same way. But once humans began cutting coconuts in half and discarding the shells into the ocean, the octopuses discovered an even better kind of shelter, Finn said.
The findings are significant, in that they reveal just how capable the creatures are of complex behavior, said Simon Robson, associate professor of tropical biology at James Cook University in Townsville.
“Octopuses have always stood out as appearing to be particularly intelligent invertebrates,” Robson said. “They have a fairly intelligent brain.”
MINERAL DEPOSITS: The Pacific nation is looking for new foreign partners after its agreement with Canada’s Metals Co was terminated ‘mutually’ at the end of last year Pacific nation Kiribati says it is exploring a deep-sea mining partnership with China, dangling access to a vast patch of Pacific Ocean harboring coveted metals and minerals. Beijing has been ramping up efforts to court Pacific nations sitting on lucrative seafloor deposits of cobalt, nickel and copper — recently inking a cooperation deal with Cook Islands. Kiribati opened discussions with Chinese Ambassador Zhou Limin (周立民) after a longstanding agreement with leading deep-sea mining outfit The Metals Co fell through. “The talk provides an exciting opportunity to explore potential collaboration for the sustainable exploration of the deep-ocean resources in Kiribati,” the government said
The head of Shin Bet, Israel’s domestic intelligence agency, was sacked yesterday, days after Israeli Prime Minister Benjamin Netanyahu said he no longer trusts him, and fallout from a report on the Oct. 7, 2023, Hamas attack. “The Government unanimously approved Prime Minister Benjamin Netanyahu’s proposal to end ISA Director Ronen Bar’s term of office,” a statement said. He is to leave his post when his successor is appointed by April 10 at the latest, the statement said. Netanyahu on Sunday cited an “ongoing lack of trust” as the reason for moving to dismiss Bar, who joined the agency in 1993. Bar, meant to
Indonesia’s parliament yesterday amended a law to allow members of the military to hold more government roles, despite criticisms that it would expand the armed forces’ role in civilian affairs. The revision to the armed forces law, pushed mainly by Indonesian President Prabowo Subianto’s coalition, was aimed at expanding the military’s role beyond defense in a country long influenced by its armed forces. The amendment has sparked fears of a return to the era of former Indonesian president Suharto, who ex-general Prabowo once served and who used military figures to crack down on dissent. “Now it’s the time for us to ask the
The central Dutch city of Utrecht has installed a “fish doorbell” on a river lock that lets viewers of an online livestream alert authorities to fish being held up as they make their springtime migration to shallow spawning grounds. The idea is simple: An underwater camera at Utrecht’s Weerdsluis lock sends live footage to a Web site. When somebody watching the site sees a fish, they can click a button that sends a screenshot to organizers. When they see enough fish, they alert a water worker who opens the lock to let the fish swim through. Now in its fifth year, the
RSS