octopus out of water

squidboymom

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How long can an octopus survive out of water? We keep seeing pictures and hearing stories of octopus escaping from their tanks. Roy was wondering how they breath.:snorkel:
 

OB

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Octopus breathe through gills that should be suspended "weightless" under water for all the tiny lamellae to be in touch with oxygenated water, in very much the same manner as fish gills behave. Taken out of water the surface area drastically diminishes to an unsustainable level and the octopus suffocates. This limits the time spent outside of the water to minutes rather than hours before the animal dies. Dessication is a compounding factor. In all, an octopus can travel from tidepool to tidepool and back to the sea, but I would suggest limited to distances one would measure in feet. Anyone have (anectdotal) evidence otherwise? I'd be interested :smile:
 

SabrinaR

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I would say thats about right... When Isis escaped she almost didnt make it. It took her a week or so to recover if I remember correctly.
 

Neogonodactylus

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Several other factors enter into the equation including size, temperature, and adaptation to intertidal habitats.

Small individuals (species) can maintain gill configuration better than larger individuals.

Nocturnal species can make it further than animals cooking in the noon day sun.

There are a few intertidal species that hunt from tidepool to tidepool and are better adapted to being exposed. I've followed individuals perhaps 20 m crawling over exposed reef flats at night, but they were at least staying moist.

The farthest I have seen an octopus that escaped in the lab travel was a large bimac that made two circuits of the lab before we were able to bag it.

Roy
 

Taollan

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If I am not mistaken I think I remember Roland Anderson, formerly of the Seattle Aquarium, tell me that he has seen GPO's survive up to 20 min out of the water in moist environments. Some species also seem to be very tolerant of compromised oxygen exchange. I know, for instance, that O. rubescens can survive at least 3 hours in completely anoxic water.
 

Mike Bauer

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Did your Octopus learn from the bad experience, does it still try to get out now?
 

Jean

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We've had them out for some hours! One (Harry) escaped his tank and was found (during a 10.30pm check) halfway up the stairs to the staff room (a fair distance) and he still had enough energy to fight the aquarist for 3/4 of an hour!
 

OB

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It isn't "normal" for their tidepool (your tank) to be externally restocked with crustaceans, so the preserved trait is to jump to the next one after finishing the available meals; it is normal feeding behaviour, which could be interpreted as curiousity as well :wink:
 



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