Octopus' blue blood allows them to rule the waves

[unable to retrieve full-text content]Worldwide colonization by octopods is in their blood. They manage to survive temperature habitats ranging from as low as -1.8?C to more than 30?C due to their ability to keep supplying oxygen to their body tissues. A new study shows that a blue colored pigment, hemocyanin, in their blood, responsible for oxygen transport, crucially allows octopods to live in freezing temperatures.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/strange_science/~3/btCwppbyaY8/130705101833.htm

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