Phylum Apr 2026

Animals with jointed legs and exoskeletons (insects, spiders, crustaceans—the largest phylum).

Phyla help biologists understand evolutionary relationships. Organisms in the same phylum—say, a human and a fish—might look very different, but they share a basic body blueprint (in this case, belonging to Chordata ). Phylum Chordata | manoa.hawaii.edu/ExploringOurFluidEarth

Creatures with stinging tentacles (jellyfish, corals). Porifera : Simple, porous aquatic animals (sponges). Annelida : Segmented worms. Why Does Phylum Matter?