After pickup in Singapore, start the trip to Kukup Island, a traditional Malaysian fishing community near Johor Bahru that stands in stark contrast to central Singapore's bustling environment.
When you arrive, visit a fishing kelong (a wooden platform on the water) where locals breed fish to sell. Your guide shows you a variety of fish that are farmed here, such as the archer fish, which feeds on insects and small land animals by shooting water at them from their mouths. Then head to the mangrove swamp of Pulau Kukup, where you can explore the native vegetation and various species of birds, some of which stop here during migration. Visit the 5-story observation spot for a view of the area.
For lunch, head to a local restaurant, possibly built on stilts over the water, for seafood, which is caught live and cooked on the spot, meaning you'll enjoy a very fresh meal served with vegetables and fried rice (own expense). Then perhaps buy local products to take home with you, such as keropok (crackers), kueh lapis (layered cake), or belachan (shrimp paste); most of which is handmade by locals.
When your time on Kukup Island ends, you'll be returned to Singapore for drop-off at your pickup location.