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 long can manatees hold their breath?
“Resting manatees can hold their breath for up to about 20 minutes.”
Reference: US Fish and Wildlife Service
More from this shelf
What are manatees most closely related to?
The manatee's closest living relatives are elephants.
How many breaths do we take each day?
People breathe about 20,000 times a day.