well usually they will sting for food. they lead a perfectly normal life down under like many other fish. but here is website which can explain it better than me (see the related links).
Coral Reefs don't really move and jellyfish move around, and sting people. Coral Reefs help other thins in the sea survive, where as jellyfish don't. The jellyfish are just there.
No.
No. A sea anemone and a jellyfish would not meet. If they did meet, the jellyfish would sting the sea anemone and kill it.
Sea turtles eat jellyfish because jellyfish are their prey and a source of food.
A jellyfish requires a marine environment to survive and could not live in a barren desert.
yeswithout the cell the jellyfish is dead
Yes. Sea turtles do eat jellyfish.
They are larvae of jellyfish.
The box jellyfish survives with its venomous stinging cells
No.
A sea nettle is almost exactly like a jellyfish.
Usually none. Jellyfish can't survive in ponds.......