Physalia Physalis
The Physalia Physalis, also known as the Portuguese Man O' War, is yet another type of jellyfish species, although it differs slightly from the previous jellyfish. For one, the Portugese man Of War doesn't have any sensory organs, so it has much less ability to feel its surroundings than other jellyfish, along with the fact that it doesn't have a central nervous system. The tentacles and epidermis do allow for some sense of touch, but react with a sting and inject venom no matter what surface they touch. So, technically the tentacles on a jellyfish do give it the ability to react to stimuli, but have much less ability than other types of jellyfish