Giant underwater isopod on 4-year hunger strike, frustrating Japanese aquarium

Giant underwater isopod on 4-year hunger strike, frustrating Japanese aquarium

Takaya Moritaki is tasked with feeding the giant isopods at the Toba Aquarium in Mie Prefecture. He prepares bowls of mackerel for the crustaceans and, for one of them, it was the fourth year anniversary of its refusal to eat anything at all.

Giant underwater isopod on 4-year hunger strike, frustrating Japanese aquarium

If you haven’t seen a giant isopod before – or maybe have seen a picture and disregarded it as a hoax – it looks like a really big version of a pill-bug, or a potato-bug, or a woodlouse. The resemblance is very keen because they’re closely related aside from the lifestyle and obvious size differences. The giant isopod lives 100 meters under the sea. They are shrewd scavengers who have adapted to going for long periods of time without food. However, when food is present, they can have ravenous appetites, sometimes even biting and cutting through underwater cables.

For Mr. Moritaki’s isopods though, this has not been the case. The Toba Aquarium has two giant isopods, one of them affectionately named “No.1”, which has been on a hunger strike since 2 January, 2009. Mr. Moritaki has tempted No.1 with whole mackerel in front of the media, placing the dead fish in front of the isopod’s face. At first, No.1 began to poke at the fish with its front legs and rub its face into the fish. But the aquarium staff was not fooled. They’ve seen this trick before.

For some unknown reason the 29 cm-long isopod pretends to eat, but quickly returns to ignoring the food. The aquarium has tried to recreate the optimum temperature for both feeding and breeding the giant isopods, but their behavior continues to frustrate the staff. “I just want it to eat something somehow. It’s weakened in this state,” Mr. Moritaki said holding his head in his hands.

[ via Rocket News ]
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  • Far East

    I can tell them what’s wrong eventhough I am no biologist :

    1) Way too much light ! The animal lives 100m underwater. At this depth, there is no much light.

    2) Intrusion and excessive interaction with human in its environment

    3) Dramatic environment change

    Put him back in its original environment, and it will eat normally.

    The morality of the story is that we should enjoy nature where it belongs, in its natural environment, and not in a man-made artificial one.

    • A.C.

      Since it’s only one of them not eating, maybe there’s a different reason (lovesickness?! ^^) …
      Also – how do you imagine enjoying nature in its natural enviroment, when this enviroment is 100m under the sea?

      • Far East

        People can just scuba dive (I do), or use some special boats with glass underneath, or just leave them alone…. Watch movies made by profesionals instead.
        The moon is great, and most of use do not need to go there to appreciate it. We can just have a look on video. I think same thing applies here.

        • A.C.

          Okay, nobody forces you to go to the zoo. I’m nonetheless greatful they excist. I don’t dive, but I sure will go and check out the 2nd biggest deep sea aquarium in Okinawa one day.

          • Far East

            I am greatful those aquarium exist, but re our initial topic, certain species should be in their natural environment.
            Okinawa Aquarium Chura Umi I absolutely awesome !but seeing the whale sharks in such limited space circling around is a bit sad even though they are beautiful to watch.

  • PiwiKiwi

    Put him back in his clean home

    • PiwiKiwi

      *ocean* home!

  • Your1Friend

    He might be unhappy in captivity. Or maybe he’s just fasting!