Question: what are types of jellyfish?
Answer: Common or Moon jellyfish (aurelia aurita) ... 
Compass jellyfish (chrysaora hysoscella) ... 
Blue jellyfish (cyanea lamarckii) ... 
Lion's mane jellyfish (cyanea capillata) ... 
Barrel jellyfish (rhizostoma octopus) ... 
Mauve stinger (pelagia noctiluca) ... 
Portuguese man o' war (physalia physalis) ... 
By-the-wind-sailor (velella velella)