Tetraquarks are theoretical particles composed of four quarks, which are elementary particles that make up protons and neutrons. These particles have not yet been definitively observed or confirmed by experimental evidence, but there is ongoing research and theoretical interest in their existence. Tetraquarks are of interest because they could provide valuable insights into the fundamental nature of quarks and the strong nuclear force that binds them together. Research in this area often involves theoretical calculations, computer simulations, and experiments at particle accelerators to search for evidence of tetraquark particles.