Here’s one:
Octopuses have three hearts. Two pump blood to the gills, and the third pumps it to the rest of the body. The heart that sends blood to the body actually stops beating when the octopus swims, which is one reason they often prefer crawling—it’s less exhausting.
Here’s something many people don’t know:
Octopuses have three hearts. Two pump blood through the gills, while the third pumps it through the rest of the body. The main heart actually stops beating when the octopus swims, which is one reason they often prefer crawling—it’s less tiring.
Here’s a good one:
Octopuses have three hearts. Two pump blood through the gills, and the third pumps it through the rest of the body. When an octopus swims, the main heart actually stops beating, which is one reason they often prefer crawling—it’s less exhausting.