How many hearts does an octopus have?
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
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- Can octopuses see color?
“Octopuses can change their skin color and texture in a fraction of a second, even though scientists believe they're colorblind.”
Reference: Smithsonian Ocean
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The world's most poisonous octopus
The worlds most smallest octopus, the Blue Ring, is also the worlds most poisonous.
Why are penguins black and white?
A penguin's black back and white belly are camouflage called countershading. From above it blends with the dark ocean, and from below it blends with the bright surface.