Well, since jellyfish are all JELLYFISH that is a way they can be related, but otherwise, some are blue, and some are purple.
They are all invertebrates.
The box-jellyfish is special from all the other jelly-fish because, it doesn't drift but actually moves. All of the other jelly-fish just drift with the current, they are not moving. The box-jellyfish is actually not a jelly-fish. It is just called a jellyfish for its jellyfish appearance not for it truthfully being a jellyfish.
All living lifeforms are related one way or another.
They are all copies of each other.
Nothing. All jellyfish are carnivorous.
No they aren't related at all.
The squid and the cuttlefish. Wikipedia has more information, and a link is provided.
Jellyfish and coral polyps are both species that are not bilaterally symmertrical, they are radially symmetrical, as are sea anemones which are also related to those species.
Carnivorous. Jellyfish, like all other animals, are heterotrophs (meaning they eat other animals).
Not only (and, incidentally, not all) asians, but peoples of other cultures eat jellyfish. Jellyfish has the texture of stiff/springy pasta.
Most if not all jellyfish are carnivorous.Jellyfish are carnivorous, eating plankton, crustaceans, fish eggs, small fish and other jellyfish.
they all share similar ideas