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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- What is the largest sea turtle?
“The leatherback is the largest sea turtle, and it feeds mainly on jellyfish.”
Reference: NOAA Fisheries
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How many species of sea turtles are there?
There are seven species of sea turtles.
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.