nope, its the other way round
Humans and Jellyfish
Depends on the species of sharks. A large species of shark like a great white shark or a mako shark can kill any jellyfish, but would get stung. Smaller sharks species would get killed after they ripped the tentacles.
A jellyfish will eat whatever prey it can subdue with the stinging cells of its tentacles, however, prey is often limited by size or the strength of the particular species of jellyfish's venom. Some jellyfish, such as the upsidedown jellyfish, do not eat prey, instead deriving all nutrition from zooxanthellae symbiotes. Once prey has been subdued, the tentacles manipulate the prey through the mouth and into the stomach, where it is exposed to digestive enzymes and broken down into nutrients and absorbed.
No.
There are numerous animals that prey on jellyfish, including leatherback sea turtles, sharks, tuna, mackerel, pelagic mollusks, crustaceans, pelagic hydrozoans, other jellyfish, and, when jellyfish drift too close to the seafloor, sea anemones. Humans commercially fish for some jellyfish species, too, as jellyfish are a part of Chinese and Korean cuisine.
There are numerous animals that prey on jellyfish, including leatherback sea turtles, sharks, tuna, mackerel, opah, pelagic mollusks, crustaceans, pelagic hydrozoans, other jellyfish, and, when jellyfish drift too close to the seafloor, sea anemones. Humans commercially fish for some jellyfish species, too, as jellyfish are a part of Chinese and Korean cuisine.
Yes.
prey
sharks capture their prey by smelling and also by scary them
sea turtles
They have a place in nature as all things do. They are both predator, and prey. They eat small fish, and are eaten by sea turtles and some species of sharks.
Sea turtles eat jellyfish because jellyfish are their prey and a source of food.