Do squid and octopus and earthworm have multiple hearts?

*I will answer the octopus first, seeing as it is my favorite animal! Octopuses absolutely have multiple hearts! One of them is for pumping blood through the body while the other two are for pumping blood through the gills!

*A typical earthworm will have five hearts, which in my opinion is way too many. I think I'd prefer being an octopus, thanks.

*Squid (my second favorite animal) also have three hearts! Two brachial hearts feed the gills, while the larger heart pumps blood around the body!