In a world-first pilot study, researchers from the University of South Australia have used video footage of insects to extract their heart rates without touching or disturbing them.

Shrimp possess a unique anatomical feature: their heart resides in their head, a surprising adaptation suited to their open circulatory system. This p ...

In the 1966 novel Fantastic Journey, by Isaac Asimov, a miniature submarine and crew travel throughout the human circulatory ...

Scorpions have one heart, a long, tubelike organ located along the top of their body. This heart pumps hemolymph, the scorpion equivalent of blood, through their open circulatory system.

By Jon LaPook February 15, 2023 / 7:07 PM EST / CBS News ...