The Fantastic Journey / 1977 Columbia Pictures

In the pilot of this short-lived 1977 NBC television series a family on a charter boat encounter a strange green cloud in the Bermuda Triange and end up shipwrecked on an uncharted island where they encounter Varian (Jared Martin), a man from the year 2230 who initially assumes the look and attire of an Arawak Indian to hide his true identity.