The bearing of oneheartis impress into our idea ofbiology . Our own bodies as well as those of many organisms we see around us have a single cardiac electric organ . But some buck the trend . Here are a fistful ofanimalswith multiple hearts .
1. Octopus and Squid
These standardised beast are both cephalopod mollusk and have three hearts in total ; one taxonomic organ to go along with two “ gill hearts ” that force blood to the gills .
2. Earthworms
While it is not technically a heart , the aortal arch of the earthworm perform a similar map and is commonly name to as one for the sake of simplicity . An earthworm has five arch / hearts that are segmented and pump blood throughout its body .
3. Hagfish
Who knew such a nasty animal could have so many hearts ? The hagfish has four of them : one main three - chambered systematic heart and three accessory heart .
Bonus: Humans
Yes , there are humans with more than one heart : those who have undergo a “ piggyback ” heart transplant operation thatadds an extra heartas opposed to replacing the original . The latter go on to function , but at a much lower story , while the organ transplant heart take over most of the threatening lifting . One personwho had the procedure as a baby laterhad it annul , and when the second core was removed , her own was capable to take back the rein .
A version of this story ran in 2013 ; it has been updated for 2022 .
