What's the coolest jellyfish?

I’d have to say the Lion’s Mane Jellyfish. it is the largest and “coolest” because it lives in artic waters. Great question by the way! It made me look at some pretty neat stuff on jellyfish!!
http://en.wikipedia.org/wiki/Lion%27s_mane_jellyfish

ze portugese man of war
ftw

Yup… Diego has chosen wisely…
Portuguese Man of War, kinda like the Mac Daddy of Jelly Fish….

arctic lions mane jellyfish.

<—- this one

Portuguese Man o’ War is lethal and beautiful but officially not a jellyfish. So treatment, if stung, would be different.

Man o’ War

gailcalled , Your link leads to a definition of portugese, not the Man o” War. here’s a new link. http://en.wikipedia.org/wiki/Portuguese_Man_o’_War

@Scamp: Thanks. I had trouble w. the “textile” mark-up and then had to go out. I appreciate you finding the correct link.

You’re very welcome! glad to help.

Any deep sea jelly with bioluminescence

Black Sea Nettle which is rare and recently visited San Diego http://www.nbcsandiego.com/slideshow/news/4773520/detail.html?qs=1;s=1;dm=ss;p=news;w=750
or
Turritopsis nutricula because it’s virtually imortal
http://en.wikipedia.org/wiki/Turritopsis_nutricula

However uberbatman’s choice looks pretty cool

wow ironhiway i didn’t know about the turritopsis nutricula i love marine life so that was really cool to learn about

How about a jellyfish that is larger than a scuba diver? Yikes!