Google Undersea Cables

This week Google announced a new fiber cable from the US to Japan. I found this line particularly interesting:

the global number of Google-owned undersea cables up to four, with more (under) the horizon

pacific-undersea-cables has a map of undersea cables, but I haven’t been able to identify which four belong to Google.

Is long distance connectivity going to be the new arms race between Google, Amazon, and Facebook?