Rust Sea
The Rust Sea, also known as the Sea of Rust, is an area of unstable planetary matter and molecular flux located along Cybertron's equator, stretching from Tyrest to Polyhex[1] to the Tagan Heights and Altihex. It constantly emits a collection of corrosive, yet relatively harmless gasses. It too is home to various forms of plantlife by the time of the Beast Era. It is Cybertron's most prominent sea, the only other one known being the Mithril Sea.
The Hydrax Plateau rises out of the center of it. Cybertron's primary spaceport is located here, where planetary visitors must check in first.[2]
Fiction
3H comics
In some universe at some point in time, Megazarak killed Optimus Prime and left his remains to the corroding care of the Rust Sea. Nemesis Prime's Universe profile
In a Primax universe, the Rust Sea bordered the Undercity. Blackarachnia and a horde of Piranacons were sent to the Rust Sea as best strategy to reach the Vector Sigma chamber. One of its old utility tunnels that had been closed before the Great War was located deep under the Rust Sea's shore and due to long exposure to the sea's gasses been made easy to breach. Information on this made the Piranacons momentarily afraid of their own safety while working in the area, but Blackarachnia aggravatingly revealed that it'd take six million years of exposure to the gasses before anyone'd have to worry about its effects.
As the Piranacons went to work, Blackarachnia searched the area to ensure their mission's secrecy. She found Rattrap nearby in the Undercity and chose to kill him just to be on the safe side. She was stopped by Depth Charge, who was on his way to the Rust Sea and ignored Rattrap's subsequent warning about the location. Taking a solitary swim to ponder on his recent resurrection, Depth Charge soon found himself surrounded by the Piranacons. Homecoming
Shattered Glass
On the hunt for the escaped Dinobots, Sideswipe and Cliffjumper made their way to one of the toxic bayous adjoining the Rust Sea. Among the crystalline growths along the bayou's edge that resulted from the Rust Sea's energon particles solidifying due to evaporation, they found Slugfest. Cliffjumper ran up to the little guy and wrestled him down, ignoring his claims that he had big friends. That is, until such a big friend burst through the tree-like crystalline growth, looking decidedly displeased. Cliffjumper's and Sideswipe's initial attacks had no effect on the creature and the situation evolved such that Sideswipe became the involuntary distraction, racing through the bayou with the behemoth right behind him, while Cliffjumper tried his best to subdue the creature. Sideswipe eventually got himself stuck in some of the crystalline growth, at which point Cliffjumper finally found an opportunity to trick the Dinobot into unconsciousness.
After getting Astrotrain to come pick up the two Dinobots, the duo noticed Huffer rushing a little further down the bayou. They cornered him and interrogated him on why he was in such a hurry. In return for an energon rod and believing the information was not going to earn the two anything, Huffer revealed that he had spotted Grimlock in the Badlands. Cliffjumper and Sideswipe immediately went after the Dinobot. Dungeons & Dinobots
Hunt for the Decepticons
The Rust Sea is home to the poisonous oxide sharks, whom Devastator based his color scheme on. Most Wanted website
Aligned continuity
Aligned novels
The Rust Sea's enclosure of the Hydrax Plateau made it difficult for the Autobots to get extra troops to the area when the Decepticons attacked it. Ultimately, the Decepticons won the battle and gained control of the plateau. Transformers: Exodus
Prime cartoon
Cliffjumper once got lost in the Sea of Rust alone. He later compared it to the Nevada desert where he and Arcee arrived on Earth. Out of the Past
After obtaining the Omega Keys, Megatron went to the Sea of Rust to find the Omega Lock. He and his men were attacked by the Autobots, who reclaimed the Keys and managed to locate the accompanying Lock. Regeneration After getting the keys back, Megatron activated the lock and restored a nearby building with it. Then Optimus Prime hit the lock with the Star Saber, exploding it and devastating the immediate area. Darkest Hour
Knock Out and a small team ventured back there to search for discarded relics. Darkmount, NV They were joined by Shockwave, who had spotted the huge energy surge created by the Omega Lock and driven over from his laboratory. Scattered
When Cybertron was restored, the Sea of Rust was transformed into a habitable landscape for Cybertronians. It was the scene of a battle between Ultra Magnus, Smokescreen, Darksteel and Skylynx. That battle resulted in Magnus being gravely wounded. Much later, after Bumblebee told Predaking of their existence, the Predacon leader searched the Sea of Rust for his two new brethren, using his flame breath as a beacon to attract them. However the beacon instead drew in a Unicron-possessed Megatron and Predaking, having previously been betrayed by Megatron, fought him but was defeated. Predacons Rising
Bot Shots
Skyquake hails from the far side of the Sea of Rust, where Bot Shots talk funny. Skyquake's online bio
Games
Transformers: Fall of Cybertron
After locating an energon lake there, Shockwave used the Sea of Rust as a location to build his prototype space bridge tower. Grimlock's Lightning Strike Coalition team was drawn there to investigate strange energy readings, and they were promptly captured by Insecticons to be experimented on by Shockwave. Jazz and Cliffjumper later ended up in the Sea of Rust during their hunt for Grimlock. Fighting their way through ruins and rust storms, they eventually found the energon lake and Shockwave's refinery. After destroying the refinery, the two Autobots reported back to Optimus Prime, and a huge transport was dispatched to retrieve the energon from the lake. Fall of Cybertron
As shown in The Art of Transformers: Fall of Cybertron, the Sea of Rust portion of the game was originally planned to be much larger. Concept art reveals plans for an army of zombie-like Cybertronians and Sharkticons pursuing the player, as well as discovering what appear to be the headless remains of Omega Supreme.
Bot Shots Battle Game!
The Sea of Rust was one of the many places on Cybertron that the Bot Shots did battle. Bot Shots Battle Game!
