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 taste with their arms?
“Octopus suckers have chemical sensors that let them taste what they touch.”
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.
Can sharks sense electricity?
Sharks have special organs called ampullae of Lorenzini that detect the tiny electric fields produced by other animals' muscles, which helps them find hidden prey.