North-East Coast and Pulau Ubin

The north-eastern coast of Singapore faces the Johor Strait, the narrow channel separating Singapore from the Malaysian state of Johor. The strait is 1 to 3 kilometres wide along this stretch and runs roughly east-west, with the tidal stream flowing east on the flood (into the South China Sea) and west on the ebb (toward the Malacca Strait). Spring tidal range in the Johor Strait is approximately 2.7 metres — the same driver as the southern islands, since both are connected to the same tidal system — but the strait's confined geometry amplifies the current: peak spring tidal streams through the Johor Strait reach 1 to 2 knots and are measurable even in a small vessel. Pulau Ubin is the defining feature of this coastline. It is the second-largest of Singapore's offshore islands and the one that has most completely resisted urbanisation — no private cars, a handful of kampung (village) houses, and working granite quarry ponds that have been colonised by wildlife since the quarrying ceased. The bumboat crossing from Changi Point Ferry Terminal takes 10 minutes and runs on demand when sufficient passengers have gathered, generally from early morning until around 19:00. There is no fixed schedule — the boats go when they go. Chek Jawa Wetlands, at the eastern tip of Pulau Ubin, is the ecological centrepiece. Six distinct habitat types — coastal forest, scrubland, grassland, mangrove, intertidal sandflat, and seagrass lagoon — compress into approximately one square kilometre, driven by the tidal cycle. The sandflat floods and drains twice daily. At low water springs, the flat is exposed for 2 to 3 hours, and the intertidal community — horseshoe crabs, sea cucumbers, fiddler crabs, mudskippers, carpet anemones — is accessible from the boardwalk system managed by the National Parks Board. Access to the lagoon area is restricted to scheduled low-water openings; check NParks Singapore for dates. Changi Beach on the mainland, adjacent to the ferry terminal, is Singapore's longest continuous beach at approximately 3 kilometres. The spring low water exposes a wide sandflat, and the views across the Johor Strait to Malaysia are unobstructed. The Changi Coastal Walk connects the beach toward Pasir Ris Park to the west, a shore-level path that can be walked at any tide state but is most interesting around low water when the tidal flat is accessible.