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Coconut Octopus - Amphioctopus marginatus Rojos, Lembeh.<br />
The same octopus, back to its shell and spreading its tentacles over it. Amphioctopus marginatus,Coconut octopus,Geotagged,Indonesia,Spring Click/tap to enlarge Promoted

Coconut Octopus - Amphioctopus marginatus

Rojos, Lembeh.
The same octopus, back to its shell and spreading its tentacles over it.

    comments (3)

  1. From today's JungleDragon Facebook post:

    "The coconut octopus (Amphioctopus marginatus) is one of the world's most resourceful and intelligent invertebrates. It's found in the tropical waters of the Pacific Ocean where it preys on clams, fish, shrimp, and crabs. It's body is about 8 cm long (3 in), and it is often seen hiding in shells or buried in the sand with only its eyes showing.

    The coconut octopus is unique among octopuses, and is the only invertebrate known to use tools. During their explorations, they actually possess the foresight to pick up halved coconut shells off the sea floor (sometimes even digging them out of the sand) and then carry them around for later use in building shelters. They have been seen carrying shells up to 20 meters (66 feet), cleaning them out with their water jets, and then arranging them in a spherical pattern. The perfect octopus fortress! Then, if they decide to move, they pick up their shells and carry them to a new location. The fact that these octopuses carry shells for future use and can correctly reassemble the parts to create a single functioning tool is remarkable. This is a behavior that has never before been observed in an invertebrate.

    As if that sophisticated behavior wasn't cool enough, this species also has a bipedal gait and can walk on two legs! As you can imagine, it can't be easy for an octopus to carry two halved coconut shells. To get around, they tuck the shells under their arms and then walk across the sea floor on two legs. Their awkward, lumbering gait has been named "stilt walking". It's less efficient than swimming, and is quite costly in terms of energy use and increased risk of predation. But, if threatened while tiptoeing across the ocean floor with their treasured shells, they can hop in the shells and pull the halves shut tight. Most potential predators aren't be smart enough to figure out how to separate the shells and extricate the octopus hiding inside.

    The behaviors of the coconut octopus exemplify how capable and intelligent they are; and, it reminds us that there are many advanced and complex creatures in nature. Humans don't necessarily hold the monopoly on intelligent behavior. {Spotted in Indonesia by JungleDragon moderator, Patomarazul}"
    Posted 2 months ago
    1. Woooow! Thanks so much for such a wonderful explanation! I have indeed seen all the behaviors that you describe> Octopuses are much smarter than many people could imagine...after all they can even predict world cup winners! :-D Posted 2 months ago
      1. You're welcome Marta! They are such amazing creatures! I would love to observe them in person, as you have!

        Oh, and I had to look up the world cup reference! Poor Paul!
        Posted 2 months ago

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''Amphioctopus marginatus'', also known as the coconut octopus and veined octopus, is a medium-sized cephalopod belonging to the genus ''Amphioctopus''. It is found in tropical waters of the western Pacific Ocean. It commonly preys upon shrimp, crabs, and clams, and displays unusual behavior including bipedal walking and tool use .

Similar species: Octopuses
Species identified by Patomarazul
View Patomarazul's profile

By Patomarazul

All rights reserved
Uploaded Jan 6, 2019. Captured May 28, 2018 05:30 in Unnamed Road, Kareko, Lembeh Utara, Kota Bitung, Sulawesi Utara, Indonesia.
  • TG-5
  • f/5.6
  • 1/125s
  • ISO200
  • 12.6mm