Mangroves in Sharm Al-Bahary and Qula’an were highly exposed during the low tide with a water depth of less than 10 cm. On contrary, the mangrove prop-roots at Hamata were not exposed at low tide with an average depth of about 30–100 cm. The average water temperature, measured during the entire study period was 23 °C. The salinity of the studied sites ranged from 41.2 to 44 (Table 1).