sentences:  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.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.