Jellyfish are an example of which type of phylum?

The correct answer is Phylum - Cnidaria. Jellyfish are actually Invertebrates (without spinal cord) and not fish.These free-swimming sea creatures move in the direction of ocean currents and are found in almost all parts of the oceans. Some of the jellyfish are immobile also and are bound to seabeds.Mostly the Jellyfish have an umbrella or bell-shaped body and are clearly transparent (some of them can have FASCINATING colors).They have an opening inside through which they eat their prey and discard the waste through the same opening.Their fossils CONFIRM their existence in pre-dinosaurs periods also. PhylumDetailsPhylum - ProtozoaUnicellular microorganisms.Protoplasmic (functions many performed by protoplasm).Respiration is aerobic.Reproduction is asexual (binary fission).Example: Amoeba, Paramecium, Euglena etcPhylum - CnidariaSac-like animals having a radially symmetrical body.A gastrovascular cavity is present having the same inlet and outlet.Asexual Reproduction.Example: Hydra, Corals, Jellyfish.Phylum - PoriferaPopularly known as sponges because the pores all over their SURFACE called Ostia.Aquatic habitat.First and simplest multicellular organisms.Are hermaphrodite, reproduce asexually (through budding).Example: Sycon, Spoongiila.Phylum - CtenophoraCiliary plates present on their body that HELP in swimming.Marine habitat.Bioluminescent. The complete digestive tract is present that includes mouth, pharynx, stomach, anal canals and anal pores.Example: COMB Jellies, Sea gooseberries etc.