Nature & Animals
Three hearts and blue blood: the octopus
Few animals are as unusual as the octopus, with a body plan unlike our own.
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From three-hearted octopuses to cube-shaped droppings, nature is endlessly inventive. This issue celebrates the odd details that make life on Earth so remarkable.
The Learn More Facts Editors
Nature & Animals
Few animals are as unusual as the octopus, with a body plan unlike our own.
Read story