This is a photo of Pacific Sea Nettle Jellyfish. They have been roaming the seas for anywhere from 500 to 700 million years. They move elegantly with their gelatinous umbrella-shaped bell bodies and flowing tentacles. They dance as if to music and I was quite mesmerized by them. They range in size from 1 millimeter to 2 meters in size for their bodies. Their nerve net system is in their epidermis. Some jellyfish are light-sensitive through something called ocelli while some jellyfish have up to 24 eyes, 2 of which can see colour. As you can see, there is quite a range. They also have a life-cycle going from polyps to the medusa stage.
Thank you for liking, commenting and/or sharing. Mary