My niece is just about 8 1/2 months old and she loves playing with water. She will always have her weekend swimming session with my brother and sis-in-law. Of course its more like playing water for her since she doesn't know how to swim yet! Took a few shot of her in the water when I was there visiting.
When you are in Johor, Muar, you should try the food at Jalan Bentayan. Its a open air food court and is always loaded with people. You might want to get there early to get places to seat. As I've already taken my dinner, I went there just for a minor supper. This place opens daily till late at night.