I did spend some time looking at photographs of the nacelles of Ju88 but couldn’t find that ‘inlet / vent’ (or that ‘exhaust pipe’) on any of them. I did think possibly Ju188 / Ju388 but had no luck there either.

But at least we know it is German.

Me too! Began to wonder if this was TWO wrecks. The pics were taken during a survey/search of the Med whilst something else was being looked for and so I suppose the pics could be of different wrecks.