the chytridiomycota usually have a very simple organization, often being one-celled, and are the only true fungi producing motile spores. the zygomycota are varied but reproduce sexually by means of zygosporangia. most zygomycota have coenocytic hyphae (few or no septa).
examples:sound waveslinky waveswater wavesstadium wavesseismic waves
these are all mechanical since each need some medium in order to exist.