* Earthworms belong to the phylum Annelida, which includes segmented worms. Earthworms have a long, cylindrical body with a segmented structure and no legs. They are invertebrates, meaning they lack a backbone.
* Spiders belong to the phylum Arthropoda, which includes insects, arachnids, and crustaceans. Spiders have a segmented body with two main body sections (cephalothorax and abdomen), eight legs, and two main body sections. They are invertebrates.
* Jellyfish belong to the phylum Cnidaria, which includes jellyfish, corals, and sea anemones. Jellyfish have a gelatinous, umbrella-shaped body, tentacles, and a radial body plan. They are invertebrates.
Therefore, earthworms, spiders, and jellyfish are not closely related and belong to different phylums.