So I had the day off and looked at the entire box set. What you get is a montage of previous aquatic sci fi. Storyline never really concluded. Too many unanswered questions leading to the correct assumtion that it's creators were looking for a 2nd series which is unwarranted. A stumbling storyline connected each episode leading to the final 15th which left me asking " So , is that it ? "
It has 2 plus points - I bought it at a discount and the show has been cancelled.