深灣 / Sham Wan
深灣位於南丫島的海灣之內，沙灘面積約0.5公頃。規劃總面積約為4公頃，屬政府擁有的土地。
The site is located at the sea inlet of South Lamma. It includes a sandy beach about 0.5 hectares in area and the adjoining shallow shore. The total size of the site is about 4 hectares. It falls on Government land.
南丫島的深灣是香港唯一已知的綠海龜產卵地點。該地於1998年曾錄得多達12個綠海龜巢穴，是南中國內剩餘的少數綠海龜產卵地點之一。因此在本地和區域的層面而言，深灣對綠海龜的存活極為重要。
正如其他海龜一樣，綠海龜會回到出生地點產卵。在繁殖季節（6月到10月），海龜會遷徙回到出生巢灘附近的淺水區交配。 雌性綠海龜平均每3年便會遷回產卵地點, 於每季上岸兩次或以上，將卵產在海灘上的巢穴之中。 因此在繁殖季節綠海龜會於此區域活動。
The site is the only known nesting site for Green Turtles (Chelonia mydas) in Hong Kong. In 1998, up to 12 nesting were recorded at the site. The site is also one of the few remaining nesting sites in Southern China. Therefore, the site is important to the survival of this species in both the local and regional context.
Green Turtles, like other sea turtles, return to nest at the beach where they were born. During their breeding season (from June to October), the turtles migrate from their feeding ground to mate in shallow waters off their nesting beach. The females come ashore twice or more a season on an average of every 3 years to lay eggs in a nest cavity on the beach. Thus their activity area during their breeding season also covers the waters immediately adjoning the beach.
地點資訊 Site Details
相關風險 Degree of Hazards
綠海龜的存活率通常很低，雖然成年的綠海龜並非每年均到海灘上的巢穴產卵，不過任何會破壞或阻礙綠海龜遷徙路線及破壞其生境的發展及活動都會成為綠海龜的存活壓力。
海灘發展丶娛樂活動或道路所導致的噪音和光害，會妨礙雌性綠海龜上岸築巢。強烈的照明及岸上的垃圾，亦會阻礙綠海龜的活動。
在綠海龜的繁殖季節(從6月到10月)，海域內的船隻和釣魚活動均有機會干擾綠海龜的交配活動。它們亦有可能被誤捕或被螺旋槳擊中。人類偷取綠海龜蛋也會導致牠們的數量下降。
Green Turtles normally have a very low survival rate due to predation and natural mortaility. Mature turtles only lay eggs every three years on the average. As the Green Turtles invariably return to the same beach to nest, any development and human activities that will change the natural environment of the nesting site and/or cause obstructions to the migratory route of the Green Turtles would wipe out the local population. Habitat destruction or alteration on the nesting beach has therefore a direct impact on the viability of the entire population. Illumination and noise produced behind the nesting beach as a result of beach development, recreational activities or roads will deter he female turtles from coming ashore to nest. Also, intensive illumination will disorient the turtle hatchings from going into the sea, causing deaths to the hatchlins. Debris washed ashore hinders movement of nesting turtles and hatchlings.
Boating and fishing activities in the sea area during the breeding season of the turtles (from June to October) may also cause disturbance to their mating activity. They could also be accidentally caught in the nest and hit by the propellers. Poaching of eggs by human will also cause serve population decline.