Mostly, yes.
soft bodies and stinging cells
No..it's a cnidarians (coelenterates) CNIDARIANS-aquatic animals with soft bodies shaped like a vase, a bell or an umbrella
Cnidarians.
3 characteristics of cnidarians are having tentacles, cnidocytes, and digestion. Cnidara have poisonous stinging cells and soft bodies. Stinging cells can be found in the tentacles of a jellyfish.
sac-like
Yes. Yes the do. Well, sponges anyway
Sponges are invertebrate animals that usually have no body symmetry and never have tissues or organs. Cnidarians use stinging cells to capture food and defend themselves. Flatworms are flat and as soft as jelly. Unlike cnidarians or flatworms, roundworms have a digestive system that is like a tube, open at both ends. Earthworms and other segmented worms have bodies made up of many linked sections called segments.
Soft bodies have no bones Invertebrates have no back bone You do the math.
The term "soft bodies" refer to animals with no skeleton.
Soft animals like sponges and cnidarians lack the structural support necessary to withstand the forces of gravity and desiccation on land. Their bodies are primarily composed of water, making them vulnerable to drying out in terrestrial environments. Additionally, these organisms rely on a buoyant aquatic habitat for feeding and reproduction, which would be unfeasible in a terrestrial setting. Consequently, their physiological adaptations are suited for life in water, limiting their survival on land.
Marine animals with soft bodies and no backbone are Mollusks.
Yes an Oyster has a soft body inside a hard shell.