Jason Connery was 20 in Dream One when he played the character 'Nemo (teen)'.
That was over 39 years ago in 1984.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 61, and has starred in 40 movies in total, 38 of those since Dream One was released.
In Dream One, I think Jason Connery looks: