[Answer] Which creature has 3 hearts?

Step 1 : Introduction to the question "Which creature has 3 hearts?"

...The octopus has three hearts in total with one of the hearts functioning as the systematic heart that pumps oxygenated blood to the other body parts. Two of the three hearts are referred to as brachial hearts and pump blood to the gills. Unlike most vertebrates with iron-rich hemoglobin packed in their blood, octopuses have copper-rich hemocyanin that dissolves directly into their blood making their blood to appear blue. Hemoglobin is more efficient than hemocyanin as an oxygen transporter. Thus, the three hearts compensate by pumping blood around the body at a faster rate to supply the needed oxygen for the octopus’ active lifestyle.

Step 2 : Answer to the question "Which creature has 3 hearts?"

Octopus:

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