Parasites are organisms that depend on a host organism to survive and reproduce. They can take many forms and exist in various ecosystems. For instance, fleas and ticks are common examples of parasites that infest mammals, causing discomfort and transmitting diseases. Another well-known example is the parasitic mite, which can infest bees and contribute to colony collapse disorder, negatively impacting bee populations and agricultural pollination. In aquatic environments, leeches attach themselves to hosts to feed on their blood, while parasitic worms, such as roundworms, can inhabit the intestines of animals, including humans. Moreover, mosquitoes act as carriers for various diseases, making them significant parasites as well. Lastly, stylops are fascinating examples of parasites that target wasps, bees, and bugs, often altering their behavior and causing potential harm to the host population.