One fact that often surprises people is that octopuses have three hearts! Two pump blood to the gills, where oxygen is collected, while the third pumps it to the rest of the body. When they swim, the heart that delivers blood to the body actually stops, which is why they prefer crawling over swimming—it conserves energy!
One fact that often surprises people is that octopuses have three hearts! Two pump blood to the gills, where oxygen is collected, while the third pumps it to the rest of the body. When they swim, the heart that delivers blood to the body actually stops, which is why they prefer crawling over swimming—it conserves energy!