Arthropods are the largest animal phylum and encompass about 85% of all known animals in the world.
Arthropods are all around you every day, even in the cold winter, including spiders, centipedes, mites, ticks, lobsters, crabs, shrimp, crayfish, krill, barnacles and scorpions. These invertebrates typically have a segmented body, jointed limbs and an outer shell that molts.