mangroves have special root-like structures. they are aerial roots or "pneumatophores". these stick up out of the soil, and are covered in lenticels. they take in oxygen through their pores. these "breathing tubes" may reach heights of up to 30 cm, and in some species, over 3 m. smaller roots with air passages move oxygen from the air to parts of the plant underwater. for more information please visit a geography site https://www.kidsgeog.com thank you mangrove