The Fantastic Journey movie poster.

TV Series (1977)

Starring:
Jared Martin (Varian)
Carl Franklin (Dr. Fred Walters)
Ike Eisenmann (Scott Jordan)
Katie Saylor (Liana)
Roddy McDowall (Dr. Jonathan Willoway)
Mike Road (Narrator)

A scientific expedition in the Atlantic Ocean becomes lost in the Bermuda Triangle and washes up on an uncharted island. They meet up with travelers from other times, planets and dimensions who have also become trapped, and together they "slide" through portals from one dimension to the next hoping to find the one that leads home.