It was created by Stephen Spielberg and lasted from (iirc) '93-95 and was a lot like Star Trek but underwater. excellent special effects even for that period and doesn't even look dated today.
There were some guest roles later which took people who played in Star Trek. i think William Shatner played a villian in one episode and Stephanie Beecham is a regular character and i believe she was in a star trek-something.
It's on
SurfTheChannel - Home
Look in 'Channels -->Television-->S--->SeaQuest DSV. it's an excellent series if not a little long forgotten. Just don't expect any Vulcans or Emergency Medical Holograms though.
