What animal has no heart, no brain, no blood?

Jellyfish! These unique creatures are mesmerizing. I have always been fascinated by the way they glide through the water.  This is a blubber jelly that I saw while diving on The Great Barrier Reef in Australia.  https://videopress.com/v/CobOHSOo?preloadContent=metadata The blubber jelly doesn’t have a mouth instead it has tiny openings of each of its eight tentacles.ContinueContinue reading “What animal has no heart, no brain, no blood?”