 Mudflats exist along the shoreline of the Royal National Park which is substantial enough to sustain a simplistic system of mangrove woodlands especially along the Port Hacking Estuary with the occasional clump of stunted tree on the seaward coastline in sheltered coves.Vegetation in the mangroves consists almost exclusively of the grey mangrove ("Avicennia marina var.australasica") growing up to 4m as well as the river mangrove ("Aegiceras corniculatum") which is usually only found on the shoreward edge of mangrove woods or in the brackish end of the Port Hacking Estuary.