When jellyfish are in the water, they can be a bit intimidating. Their tentacles can pack a painful electrical shock. However, once they wash up on shore, they are anything but intimidating.It turns out that jellyfish are 98% water. Most are transparent and bell-shaped. If they end up on the beach, they will most likely evaporate in a few hours and mostly disappear.Jellyfish also don’t have brains, bones or a heart. They do have rudimentary sensory nerves though.
