I think I understand.
Try here
link
You'll see a range of countries which are defined as being part of the "Pacific Rim". Take that carefully though. Canada and the United States, for example, are Pacific Rim countries but their capital cities are inland and on the eastern side of each country. They do have Pacific coasts but they are a long way from the political capital city of each country.
On the other hand a country like New Zealand is a Pacific country. Its capital city is Wellington which is at the bottom of the North Island.
Being yet more specific is this link
link
which specifies countries which are actually located in the Pacific.
I hope that helps. If you have a bit more info about the specific inquiry you have to make and you choose to post it here I'm sure you would get other responses which may help.