Some jellyfish are bioluminescent and some are fluorescent. Some are neither and some are both bioluminescent and fluorescent. Jellyfish are usually encountered near the surface of the sea and during daytime hours. And these encounters generally end up in acute pain without the chance to see their beautiful light. But deep in the sea there are many, many bioluminescent jellyfish. Roughly half of all jellyfish are bioluminescent in the deep sea.
At PyroFarms we are developing a non-stinging terrestrial bioluminescent jellyfish (~; Please follow us on FaceBook or join our mailing list to learn more about this amazing new jelly.