Describe the family that appears in the photograph!
I See the Husband, the Wife whit Son and Daugher.( I see the husband with his wife and their two children namely a daughter and a son.) You can also rewrite as under in simple language.
"The photo (picture ) has four members : the father, the mother and their two children. The older is the girl and the younger is the boy.They seem to be very happy."
In the photograph I can see, the young couple are enjoying in the park along with their two children.
The husband and wife are sitting in the park along with their son and daughter.