The First World War's Mediterranean naval campaigns

Were there significant naval actions in the Mediterranean during the First World War?

Yes; they included Goeben and Yavuz, operations against Austria-Hungary, the Otranto Barrage, and Japanese-supported antisubmarine warfare.

First World War naval activity extended across several parts of the Mediterranean. Goeben appears under its German name and as Yavuz after transfer to Ottoman service. Operations against Austria-Hungary and around the Otranto Straits and barrage provide further examples. Japanese antisubmarine forces also served in the theater. This is a short survey of participants and operations, without detailed accounts of individual battles.