There are several methods to get across the country from Karimunjawa to Malang… and so they’re all a bit of a headache. Personally, I took a ferry from Karimunjawa to Jepara, a shared taxi from Jepara to Semarang Bus Station, a neighborhood bus from Semarang to Surabaya, annnnddd lastly (immediately after keeping overnight and having a lie-in),