: Planula (larva), Polyp, Ephyna
: Swarm, Smack, Smuck, Bloom, Smuth?, Fluther?
Some aquariums now call them Sea Jellies because Jellyfish are not fish.
One species, Lion's Mane Jellyfish is recorded as being the longest animal on earth, just slightly longer than a Blue Whale. Another species is so transparent that it's almost invisible. My Grandad says that one species is totally transparent and therefore no-one knows it exists, it's called the Burgin Jellyfish. Yeah, I think not!