History Series / ManFromAtlantis

The main character is an [[AmnesiacHero amnesiac]] [[ApparentlyHumanMerfolk "water-breathing man"]] with webbed hands and feet who is discovered unconscious on a beach. Dr. Elizabeth Merrill, a scientist, restores him to health by placing him underwater, names him Mark Harris, and [[MotherlyScientist takes him under her wing]]. Mark is found to have extraordinary swimming ability, great speed and strength, highly-developed senses including the ability to see in very low light, and a need to return to water every few hours. These abilities and Mark's resistance to water pressure at great depths lead to a covert assignment for the U.S. Navy, after which Mark [[IChooseToStay chooses to join]] Elizabeth at the Foundation for Oceanic Research, an organization which [[CovertGroupWithMundaneFront conducts secret government missions in addition to science]]. The Foundation has a [[CoolBoat very nice submarine]], known as the Cetacean.

* MakeMeWannaShout: The siren's song in [[ExactlyWhatItSaysOnTheTin "Siren"]] has a narcotic effect, but when amplified can induce loss of consciousness, cause electrical overloads to equipment, and even "damage the cerebral cortex".

* WorthyOpponent: From "Melt Down":
-->'''Brent''': It's a vessel!
-->'''Schubert''': It's the Cetacean! Who else could have figured out where it is? Ooo, they are good! Too bad we're going to have to step on them.

* WickedCultured: Schubert loves (and plays) classical music, and always has fine food and drink on hand.

* KidnappedScientist: Schubert's scientists in the pilot movie are close to this trope since they have been deprived of free will.

* WeCanRuleTogether: Dr. Smith is taken with Mark, and ends up offering him a choice place in her new world.

'''Mark''': Mine?
'''Dr. Smith''': We'd make a pair, Mark. You and I. What's to stop us?

** In "The Disappearances" it is the water in the spa.

** In "The Disappearances" he is locked in a shed and comes close to dying as a result.

* PhlebotinumBattery: Mark will weaken and die if he does not periodically return to water. In "Killer Spores" he is close to death in the desert, and Elizabeth saves him by having a helicopter drop him into the nearest body of water, a swimming pool.

* TechnicallyNakedShapeshifter: The aliens in "The Death Scouts" kidnapped divers

* TechnicallyNakedShapeshifter: kidnapped divers

* HumansAreTheRealMonsters: Somewhat in "Killer Spores". A space probe returns to Earth with intelligent alien spores which seem hostile, [[PuppeteerParasite taking control]] of numerous people. Mark claims that the spores were transported to Earth against their will and consider humans to have invaded their territory with the probe. The spores end up simply [[spoiler:wanting to go back home - however, if not sent home they promise to remain and cause mankind's destruction by exacerbating his natural warlike tendencies.]]

* HumansAreTheRealMonsters: Somewhat in "Killer Spores". A space probe returns to Earth with intelligent alien spores which seem hostile, [[PuppeteerParasite taking control]] of numerous people. Mark claims that the spores were transported to Earth against their will and consider humans to have invaded their territory with the probe. The spores end up simply [[spoiler:wanting to go back home - however, if not sent home they promise to remain and use mankind's natural warlike tendencies to destroy him.]]

* HumansAreTheRealMonsters: In "Killer Spores", a space probe returns to Earth with intelligent alien spores which seem hostile, [[PuppeteerParasite taking control]] of numerous people. In turns out that [[the spores were transported to Earth against their will and