Ricardo Montalban heads a team of undersea explorers dealing in below-the-surface scientific research. At the moment, a mysterious pollutant is killing all the fish off the coast of a fictional East African nation. The cause is a sunken ship that is leaking a deadly nerve gas. Montalban must race to neutralize the gas before mustache-twirling villain Jose Ferrer grabs the toxic fuel for his own evil purposes. Montalban's team includes a beautiful woman (Kate Woodville), who exists solely for the benefit of wetsuit-watchers in the audience. Filmed as the pilot for a TV series, The Aquarians was produced by Ivan (Sea Hunt) Tors in Florida and the Bahamas. It has also been telecast under the alternate title Deep Lab.