Mera and her walrus companion Tusky discover a beautiful flower growing out of some silver sand. The flower kidnaps Mera to a water world beneath the regular ocean. Tusky gets Aquaman and Aqualad and they discover that Mera has been kidnapped by the evil Slath. Can they save mera before it's too late?
Tremors and quakes are causing havoc in the sea. Aqualad is in the area and Aquaman goes to investigate. Turns out that diamond drills controlled by the Molemen, a race of mutants, are causing the problems. Aquaman is captured by the Molemen while Aqualad goes to warn Atlantis and learns of an invasion plan. Can Aquaman save himself and Atlantis?
Aqualad finds a city built by a super scientific race. The race turns out to be The Octomen. Aqualad and Tusky are kidnapped by them to lure Aquaman into a trap and find out how he communicates with the sea creatures. While saving Aqualad, Aquaman is captured and forced to reveal how he uses his powers. This gives him an opportunity to call his undersea friends for help. At this moment the trap, an electric octo-giant, is unleashed. Aquaman and Aqualad are forced to find a way of destroying the creature.
The domed city of Atlantis is attacked by The Brain, who uses sonic brain waves. Aquaman and Aqualad go to investigate and intercept a missile attack with the help of their fish friends. However, after the sonic brain waves are activated, Aquaman no longer has control over the fish, giving The Brain the perfect opportunity to attack Aquaman.
A Gillman, a half human - half fish creature, is chasing Tusky. He barks for help and the aqua duo respond to save their friend. But rather than being an evil being he's actually in search of Aquaman's help. A Marine Mastadon Man has attacked his village and they are helpless. Aquaman lures the Mastadon Man away and does battle with him.
While on a journey to get some rare phosphorus, Aquaman, Aqualad and Tusky arrive at the Valley of Glowing Rocks, get their phosphorus and head home. On the way Tusky ends up getting lost. A submarine full of mutants known as Bulks, who work for the sinister Sea Scamp, see and harass Tusky. Aquaman and Aqualad show up to save him from a kelp monster that is holding him. The Sea Scamp then animates the hunk of phosphorus into a monster to get them, but will he be victorious?
Aquaman and Mark Bartholomew, a Navy test pilot Mark Bartholomew, are to test a new experimental underwater craft called The Devil Fish. Black Manta devises a plan to capture The Devil Fish for himself. Despite Aquaman and Aqualad�s efforts to fight off an onslaught of mantamen, Mark and The Devil Fish are captured into The Great Whirlpool. Will Aquaman be able to save them?
Aquaman and Aqualad are checking out a threat by The Sea Scavenger on a Texas tower offshore oil drill. Down below Scavo and his scavengers are controlling a giant metal robot that tears apart the oilrig. Aquaman and Aqualad defeat the robot and then must contend with Scavo and his goons in the open water. The whole aqua team is knocked out by guns that shoot compressed water. The scavengers then activate a thermal-gun that begins to warm up the ocean. Can Aquaman save the day again?
Tusky arrives at the cave just before Aquaman and Aqualad and discovers a strange stone. It turns out to be a special emerald that allows Aquaman to keep tabs on his friends the Jewel People. Tusky alerts Aquaman to the arrival of Captain Cuda who is attempting to steal from his friends. Can Aquaman get there in time?
Aqualad and Tusky are racing home when they run into Aquaman who informs them they are needed for a top-secret assignment. When they arrive for a briefing they are told that a new planet has been discovered, planet Q-344. The new planet is entirely covered in water and is inhabited by intelligent life. Aquaman agrees to explore the new planet for the government.
Aqualad and Tusky discover an old crusty jug. Aqualad goes to look inside and releases Snork The Great, an undersea genie. He offers Aqualad 3 wishes. His first wish is for a powerful robot that will do anything he wants. When the robot gets out of his control and Aquaman can't stop it, Aqualad has to use his second wish on a robot smashing machine. When Aqualad goes to put the genie back in the jug temptation overcomes him and he wishes to, for once, have Aquaman's powers. Again, the wish turns disastrous and Aqualad has to come save the day.
Aquaman must try and stop a war that begins after a silver sphere mysteriously appears from a crevasse in the ocean floor. Tortoids and The Lizard Men both want the sphere and Aquaman suggests that they compete in a series of athletic events to determine ownership rather than to fight over it. The winner to have possession of the sphere for an entire year. The Black Manta has been observing from his nearby ship and he also wants the mysterious silver sphere.