mangrove species are often zoned parallel to the shoreline. the zone where each species occurs is determined by tide levels and soil conditions. the river mangrove generally occurs in the fringing zone, close to the mean sea level mark. the grey mangrove and the red mangrove are commonly found growing in a zone behind the river mangrove between the fringing and the intermediate zone. the large-leaved mangrove and the milky mangrove are usually found growing within and above mean high water mark, with both species occurring between the intermediate and the landward zone