Table of Contents (click to expand)What Is A Jellyfish?Jellyfish Have No Brain, But They Do Have A Rudimentary Nervous System!Jellyfish Circulate Nutrients And Gases Through Diffusion. Jellyfish do not have brains. They don’t have hearts either, but jellyfish do have a very basic set of nerves at the base of their tentacles. These nerves detect touch, temperature, salinity, etc. Sentences in statocysts are weird. There is no shortage of strange animals on Earth, and it should come as no surprise that the vast majority of these bizarre earthlings are found underwater, given how much of the deep blue remains unexplored. … Continue reading How Do Jellyfish Function Without A Heart Or Brain?