Pacific Ocean
The Pacific Ocean is the largest ocean on Earth. North America, South America, Asia, and Australia all have shores on it. Transformers are frequently present in and around the Pacific Ocean due to the presence of two particular Pacific Rim nation-states, the United States of America and Japan.
Fiction
Kid Stuff Talking Story Books continuity
Generation 1 cartoon continuity
The Transformers cartoon
Metroplex defeated Trypticon by hurling him into the Pacific Ocean. Five Faces of Darkness, Part 5
Japanese cartoon continuity
Fight! Super Robot Lifeform Transformers manga
Robotmasters online manga
Super-God Masterforce cartoon
The Decepticon Base was located under the Pacific Ocean.
Super-God Masterforce manga
The Decepticon Base was located under the Pacific Ocean. Headmaster Jrs Are Born
Dreamwave Generation One continuity
Age of Extinction film
The Pacific Ocean was visible in the background during the battle of Hong Kong. Age of Extinction
IDW Generation 1 continuity
The Pacific Ocean was visible in the background when the Autobots and Decepticons traveled to the Earth Defense Command base in the Marshall Islands. Full Fathom Five
