How to rech Elba by coach

From Milan:

Two transport companies make bus service on the route Milan-Elba Island-Milan
they are the MAREMMA TOUR and LINE AUTOSTRADALE TOUR.

From Florence:

A company provides the service on Elba Island-Florence-Elba Island route.This is the SITA of Florence.Buses wait in the train station front square of Piombino Marittima just a few meters away from the Moby- Toremar-Blu Navy ferries moor.