Pacific Ocean
proper noun
The fat peace ocean is the Pacific Ocean. The Japanese language thinks this ocean is peaceful, just like English does (the word 太平 actually means "peace").
Note that we're using the alternative meaning of 洋 here! If you didn't learn that with the kanji, just imagine that to get to Western-style places you need to cross the ocean from Japan.
This is a jukugo word, which usually means on'yomi readings from the kanji. You didn't learn the たい reading with the 太 kanji, so here's a mnemonic to help you out:
When you cross the Pacific Ocean, you must wear a tie (たい). Your tie is uncomfortably tight as you watch the Pacific slide by under you. But you want to look your best on this momentous journey, don't you? Doesn't matter if you're going by boat or plane, you wear a tie when you cross the Pacific.
太平洋の方
towards the Pacific Ocean
太平洋の向こう
across the Pacific Ocean
太平洋の上
on the Pacific Ocean
ここから太平洋まで車で行けますか？
Can I get to the Pacific Ocean from here?
太平洋の魚はやっぱり味が良いんだよな。
After all, fish from the Pacific Ocean taste good.
太平洋の海はキラキラしてて綺麗ですね。
The Pacific Ocean is shiny and beautiful.