mandai mudflats in northern singapore

soil tree coast plant shore geology wetland terrain sea rock agriculture cliff landscape waterway wilderness hill field grass mandai mudflats northern singapore tropical asia kranji mangrove mangroves trees natural nature park straits johor malaysia seaside water channel boundary coastline coastal area swamp muddy aerial roots beach rocky habitat skyline buildings rural green blue space greenery conservation marine ecosystem level low tide exposed skyscrapers vegetation climate change mitigation ground land heritage island mainland protection plants environment strands clumps cluster growth