The Strange Cardiovascular Secret of the Giant Octopus
Explore the bizarre evolutionary biology of the giant octopus and its three hearts. Discover how this deep-sea predator survives with a unique cardiovascular system that completely shuts down its main heart during movement, and what it reveals about our own single-heart biology.
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Explore the bizarre evolutionary biology of the giant octopus and its three hearts. Discover how this deep-sea predator survives with a unique cardiovascular system that completely shuts down its main heart during movement, and what it reveals about our own single-heart biology.
Full transcript of The Strange Cardiovascular Secret of the Giant Octopus
Your heart beats about a hundred thousand times a day. But deep in the ocean, a creature survives with three. Meet the giant octopus. Two of its hearts pump blue, copper-rich blood exclusively to its gills... ...while a central heart drives oxygen to the rest of its body. But here's the catch: when this predator swims, its main heart completely stops. It literally crawls to keep from suffocating. It’s a cardiovascular design so fragile, yet so evolutionarily perfect... ...it begs the question: is our single heart a luxury, or a limitation?