Three endangered green turtles laid 900 eggs on Lamma Island this year, half of which successfully hatched. Most of the baby turtles found their way to the ocean. The three turtles nested at Sham Wan during the breeding season between June and October this year, according to the Agriculture, Fisheries and Conservation Department. 'The turtles laid nine clutches of eggs, and some 900 eggs were found. All of the eggs were left to hatch naturally at Sham Wan,' said Cheung Ka-shing, a wetland and fauna conservation officer. 'It took about two months for the baby turtles to hatch, with a hatching rate of 40 to 60 per cent. Our nature wardens filmed a batch of baby turtles emerging from the sand and crawling towards the sea,' Mr Cheung said. Last year, about 500 turtle eggs from six clutches hatched at Sham Wan, a similar amount to this year. A satellite transmitter was attached to one of the mother turtles after she landed at Sham Wan in late June to trace the turtle's migratory route. The mother turtle nested seven times during her three-month stay at Sham Wan. After leaving Hong Kong, she swam southwest about 900km along the coast of the South China Sea, and arrived at a small island between Hainan island and Vietnam in late September. 'The satellite tracking studies indicate that some of the green turtles nesting at Sham Wan came from the coastal waters off Hainan island. Our department will continue the tracking programme to study the life history of green turtles,' Mr Cheung said. International co-operation was essential to sea turtle protection, he said, as they were a migratory species, and the adult turtles travelled hundreds or thousands of kilometres from their feeding grounds to beaches where they laid eggs. Mr Cheung said the department was in regular contact with turtle researchers in other parts of the region. Sham Wan is the only turtle nesting ground in Hong Kong and is closed to the public during the breeding season.