A British couple had a lucky escape last week after they were lost at sea for five terrifying hours.The couple, both in their thirties, were starting a ten-day diving holiday off the coast of Indonesia.With its warm waters and variety of fish and other sea life, this is an excellent place to go diving.The Browns were only a short distance from land but they had to swim away from the shore to avoid some nearby rocks.That morning the Browns went out with a dive boat and entered the water to explore.When people realised that the Browns were missing.two helicopters and more than 20 boats started searching for them.Jim and Sally Brown were looking forward to their holiday but on their first morning, they had a frightening experience.Their five-hour nightmare began.