Well because they're made of 95% water
a backbone
Bones
No, purple jellyfish do not have a backbone. Jellyfish are invertebrates, meaning they lack a spinal column and are primarily made up of a gelatinous substance. They belong to the phylum Cnidaria, which also includes corals and sea anemones. Their bodies are composed of a soft, umbrella-shaped bell and tentacles, but they do not possess any hard structures like bones.
A brain.
No, jellyfish are neither of these. The gastropods and bivalves belong to the phylum Mollusca, whilst jellyfish are Cnideria. Jellyfish are in many ways more primitive than molluscs, and lack many of their structural features.
Yes; jellyfishes have no head.
spine
No, they lack the body parts needed to preform that function.
jellyfish sting you and clams dont harm you at all:)!
No examples of the skeleton refer to instances or situations where the skeletal structure is not present or relevant. For example, jellyfish and octopuses do not have a skeleton; instead, they have soft bodies supported by water pressure or muscle. Additionally, organisms like sponges and certain types of worms also lack a traditional skeleton, relying on their cellular structure for support. These examples highlight the diversity of life forms that do not possess a skeletal system.
Jellyfish have no ears.Jellyfish lack basic sensory organs and brain, but their nervous systems generally allow them to perceive stimuli such as light and odor.
They're not 'afraid' - as they lack the intelligence to know when they're in danger. Leatherbacks eat jellyfish as part of their natural diet.