Complex sentence: Machilids undergo virtually no metamorphosis during their life cycle and both nymphs and adults are generally inconspicuous herbivores and scavengers, many species being restricted to rocky shorelines, but some found in well vegetated habitats inland.
Split into simpler sentences: Machilids undergo virtually no metamorphosis during their life cycle and both nymphs and adults are generally inconspicuous herbivores and scavengers. Many species are restricted to rocky shorelines, but some are found in well vegetated habitats inland.