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Octopuses will go blind thanks to climate change

Posted By Jo Nova On May 21, 2019 @ 7:04 pm In Global Warming | Comments Disabled

Octopuses survived the meteor that wiped out the dinosaurs, but look set to go blind thanks to coal fired power and your car.

Octopuses may go blind from climate change, study warns

Octopus, Photo.

Plastic pollution and climate change may be significantly altering the level of oxygen on our planet. Now, a new study dives into the impact it could have on marine life, including squids, crabs and octopuses – blindness.

The study, published in the Journal of Experimental Biology, highlights how important oxygen is to sight and retinal activity for certain marine larvae. Tiny declines in oxygen levels result in significant vision impairment, including almost total blindness in certain species.

“Using in vivo electroretinogram recordings, we show that there is a decrease in retinal sensitivity to light in marine invertebrates when exposed to reduced oxygen availability,” the study’s abstract reads. “We found a 60-100 [percent] reduction in retinal responses in the larvae of cephalopods and crustaceans…

Or more specifically: Octopuses will go blind if they are suddenly dumped in tanks with reduced oxygen…

To test the theory, the animals were put in reduced oxygen environments for approximately 30 minutes.

Time to legislate against free range low-oxygen tanks.

Every day, octopuses survive swimming up and down through different oxygen levels of water, but a slow change over 200 years will blind them. Really.

The research highlights that it is likely there is a change in oxygen in the daily environment of these animals due to swimming at different depths, but it underscores the concern that a permanent decline could be destructive.

You can’t make this stuff up, but you can buy it with enough government grants.

Photo Mr. Mohammed Al Momany, Aqaba, Jordan

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