come in pleaseSunger Buloh is a choice: http://www.sbwr.org.sg/ Chek Jawa of Pulau Ubin is another Choice: (map of Pulau Ubin: http://www.nparks.gov.sg/nparks_cms/cms/cmsmgr/data/6/Ubin_Map.jpg) LimChuKang Mangrove is a third Choice: (map of LCK mangrove: http://mangrove.nus.edu.sg/guidebooks/text/1006.htm) Pasir Ris Park is a fourth choice: (map of PR park: http://mangrove.nus.edu.sg/guidebooks/text/1017.htm) I personally think, Labrador Park and Kranji Nature Trail are good places to visit, too. These two places are more like tidal wetlands, not mangroves, but you can find a lot of funny crabs, lobsters, shells, crawling around your feet (map of labrador park: http://www.nparks.gov.sg/nparks_cms/display_park.asp?parkid=12 map of Kranji NT, you have to search by yourself.....)