Arctic terns fly about 70,000 kilometers a year, the longest known migration of any animal.

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An Arctic tern in flight with wings spread
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70,000 km

Arctic terns fly about 70,000 kilometers a year, the longest known migration of any animal.

Yes. Tracking studies show Arctic terns fly roughly 70,000 kilometers a year between Arctic breeding grounds and Antarctic waters, the longest regular migration recorded for any animal.

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Octopus vulgaris (common octopus)
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Octopuses have three hearts and blue blood.

Octopuses have three hearts: two supply the gills and one supplies the rest of the body. Their oxygen-carrying protein contains copper and turns blue when oxygenated.

Common Wombat (Vombatus ursinus tasmaniensis) on Maria Island, Tasmania, Australia. The entire island is a national park, Maria Island National Park. The adult is just under a metre in length on average.
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Wombats poop cubes.

Wombats produce distinctly cube-like droppings, shaped inside the intestine rather than by a square opening. Research links the shape to differences in the mechanical properties of the intestinal wall.

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