[jedberg]

You can search google for [undersea cable map] but this one is the best:

https://www.submarinecablemap.com

This will show you everything connected to Ireland:

https://www.submarinecablemap.com/country/ireland

[rsynnott]

There’ll be one to France as of 2026 (as part of this project: https://en.wikipedia.org/wiki/Celtic_Interconnector)