Hi I'm trying to find the title of a movie I think was made in the 80`s its about a young boy but he was a robot and went to stay with a foster family I think, near the end of the movie he drowns (or so they think) then his foster brother says... robots don't die... they go to see him and he is alive :)

Could you be thinking of D.A.R.Y.L.

Thank you so much yes that is the film I have been trying to find