- Pacific Plate: The Pacific Plate is the largest tectonic plate on Earth and covers most of the Pacific Ocean floor. It is bounded by the North American Plate to the east, the South American Plate to the southeast, the Antarctic Plate to the south, and the Australian Plate to the west.
- North American Plate: The North American Plate extends from the Arctic Ocean in the north to the Caribbean Sea in the south and includes the continent of North America, Greenland, and parts of northeastern Siberia. It borders the Pacific Plate along the San Andreas Fault in California and the Cascadia Subduction Zone in the Pacific Northwest.
- South American Plate: The South American Plate encompasses the continent of South America and extends into the Atlantic Ocean. It is bordered by the Pacific Plate along the Nazca Plate and the Caribbean Plate.
- Antarctic Plate: The Antarctic Plate includes the continent of Antarctica and extends into the Southern Ocean. It is adjacent to the Pacific Plate along the Pacific-Antarctic Ridge.
- Australian Plate: The Australian Plate covers the continent of Australia and parts of the Indian Ocean and Pacific Ocean. It meets the Pacific Plate along the New Hebrides Trench and the Solomon Islands Trench.
These tectonic plates are constantly moving and interacting with each other, which shapes the features and hazards of the Pacific Ocean region.
