the swimming boundary of the park. Further offshore, floating coloured lit buoy markers delimit the boundary of the shipping routes. There are no lighthouses operating in the harbour or its precincts. Along the coast on mainland Singapore, there are multiple jetties and boardwalks from east to west, the Changi Ferry Terminal, SAF Changi Ferry Terminal, Changi Airport Fuel Hydrant Installation (CAFHI) Jetty, Changi Point Ferry Terminal, Changi Sailing Club Jetty, Changi Boardwalk, Police Coast Guard Loyang Base, Loyang Offshore Supply Base Jetty, Lorong Halus Jetty and the Outward Bound Singapore (OBS) Punggol Jetty. Along the coast of Pulau Ubin, there are multiple jetties and boardwalks from east to west, the Chek Jawa Boardwalk, Chek Jawa Viewing Jetty, Pulau Ubin Main Jetty, OBS Camp Two Jetty and OBS Main Jetty. The jurisdiction of Serangoon Harbour falls under the Police Coast Guard Loyang Base. In the event of an aviation accident in the area, the Changi Airport Emergency Service (AES) would be deployed too. Nature Pulau Ubin is adjacent to the harbour and is the location of one of few remaining undeveloped parts of Singapore that is rich in biodiversity. There have been spotting of crocodiles and dugongs amongst other wildlife. Migratory birds have also been known to use the area as a stopover point for their flight. There have been occasional phytoplankton blooms in the harbour too that have affected the water appearance as well as the fish stocks especially those in the kelongs. Transportation The main mode of transportation across the harbour is by small bumboat ferry service that originate from Changi Point Ferry Terminal and usually travel towards Pulau Ubin Main Jetty. Each ride costs SGD$3 per passenger and there usually is a short wait until each bumboat ferry has 12 passengers before the boat departs. Passengers arriving via ferry to this terminal have to undergo security screening of personnel and baggage from whichever location they are arriving from (even Pulau Ubin) for security reasons. The OBS School have their own private craft to ferry participants to and from the camps along the harbour. Developments Future Plans There are currently no future plans with regards to the harbour, which includes no plans for land reclamation in that area despite the land scarcity issue in Singapore. Unsuccessful Plans There were plans in the 1970s to reclaim land between Singapore and Pulau Ubin to build a large sea reservoir, to increase