We just learned about the Velella the sea sail hydrozoan.
Another type of jellyfish is the Blue Jellyfish, also called the bluefire jellyfish, Cyanea lamarckii or cyanea nozakii.
This is a small blue or yellow jellyfish grows to about 1 inch wide.
They mostly live around the areas of Europe by Sctoland and England.
They do have stinging tentacles that hurt a little if a person gets stung, but they will not kill anyone.
(from: wikipedia - blue jellyfish)
Blue jellyfish and Saithe from Norwegian coast - DanOlsen
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