What advantages does having three hearts give to a squid?

Having three hearts allows squids to efficiently circulate blood throughout their bodies, which is crucial for their active lifestyle. Two hearts pump blood to the gills for oxygenation, while the third pumps oxygenated blood to the rest of the body. This specialized circulatory system enables squids to sustain high levels of activity and adapt to varying oxygen levels in their aquatic environment. Additionally, it supports their rapid swimming and predatory behaviors.