Produced by Steven Spielberg, SeaQuest DSV aired for fifty-seven hour-long episodes over two-and-a-half seasons on NBC, and ultimately sailed through some very choppy waters. In broad terms, the series is a kind of update and re-imagining of Irwin Allen's Voyage to the Bottom of the Sea (1964 - 1968) concerning a state-of-the-art submarine on missions of scientific exploration, political intrigue and even, from time-to-time, the fantastic.
To further support this aspect of the series, each and every episode ended with a brief epilogue and lecture from the show's science advisor, oceanographer Dr. Robert Ballard. His monologues would frequently point out how elements of the preceding episode were based on fact; and then encourage viewers to learn more about the subject.
In "Such Great Patience," he is also the object of the alien creatures at the ocean floor. They came to Earth all those years ago...to talk to dolphins.