For example, the reduction in leatherback sea turtles, which feed almost exclusively on jellyfish due to longline fishing has paralleled extensive jellyfish blooms.

And here in China, Randy shot a jellyfish market.

Diana Nyad Extreme swimming with the world's most dangerous jellyfish

There are lots of jellyfish in the ocean in September.

Layla tried to swim away from the school of jellyfish.

Musicians from Cheap Trick and Jellyfish contributed to the album as well.

The sting of this jellyfish is extremely painful to humans but is rare.

Now jellyfish are strangely hypnotic and beautiful, and you'll see lots of gorgeous ones at the aquarium on Friday, but they sting like hell, and jellyfish sushi and sashimi is just not going to fill you up.

And then my pickled jellyfish at the Hong Kong Supermarket on Route 18 in East Brunswick.

And then another pair of legs we collaborated on were these look like jellyfish legs, also polyurethane.

Like those big explosions, sparks, are from a little comb jelly, and there's krill and other kinds of crustaceans, and jellyfish.

You take a glow gene out of a coral or a jellyfish and you stick it in a zebrafish, and, puff, they glow.

So, what we end up with is a microbial zoo dominated by bacteria and jellyfish, as you see on the left in front of you.

Jellyfish have roamed the seas for at least 500 million years, and possibly 700 million years or more, making them the oldest multi organ animal.

And the only fishery left and it is a commercial fishery is the jellyfish fishery you see on the right, where there used to be prawns.

And there are a lot of different animals that can do this There's jellyfish, there's squid, there's a whole lot of different crustaceans, there's even fish that can do this.

I knew there were Portuguese men o' war, all kinds of moon jellies, all kinds of things, but the box jellyfish from the southern oceans is not supposed to be in these waters.

The most interesting discovery of late, I think is the so called immortal jellyfish, which has actually been observed in the lab to be able to be able to revert back to the polyp state after reaching full maturity.

And I was telling these kids, 120 of them they were all in the school on the gymnasium floor and I was telling them about the jellyfish and how they're gelatinous and you can't see them at night especially.

Marine biologist Tierney Thys asks us to step into the water to visit the world of the i Mola mola i , or giant ocean sunfish. Basking, eating jellyfish and getting massages, this behemoth offers clues to life in the open sea.

For example, a gene from a jellyfish, encoding a fluorescent protein called GFP, or green fluorescent protein, can be physically linked and thus co expressed with mammalian genes to identify the location of the protein encoded by the GFP tagged gene in the mammalian cell.

Monterey Bay Aquarium Research Institute gave me time with their ROV so that I could test it and we could figure out, you know, for example, which colors of red light we had to use so that we could see the animals, but they couldn't see us get the electronic jellyfish working.

In 2008, the Nobel Prize in Chemistry was awarded for work done on a molecule called green fluorescent protein that was isolated from the bioluminescent chemistry of a jellyfish, and it's been equated to the invention of the microscope, in terms of the impact that it has had on cell biology and genetic engineering.