Across the animal kingdom, hearts come in surprising numbers, shapes, and arrangements. Some have structures that act like hearts without technically being hearts. Others have none at all and manage just fine.
Many creatures rely on multiple pumps to keep their blood flowing. Sometimes these are true, distinct organs working in harmony, while some are specialized structures that act as pumps to support the main heart.
In this gallery, we see how creative nature can be with circulatory systems to keep animals alive and moving. Click to know more.