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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- How do sea otters protect kelp forests?
“Sea otters eat sea urchins, which keeps urchins from destroying kelp forests.”
Reference: NOAA Fisheries
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Which animal has the densest fur?
Sea otters have the densest fur of any animal, up to about a million hairs per square inch.
Can an octopus's arms think for themselves?
About two-thirds of an octopus's neurons are in its arms, so each arm can sense and react somewhat independently of the brain.