A submarine survey along the coasts of Ithaca and Fiscardo has permitted the identification of fossil shorelines produced by recent co-seismic movements. In both areas a tidal notch slightly submerged below present MSL was observed at various sites. This “modern” notch is known to have been submerged by the global sea-level rise during the 19th and 20th centuries. The depth after tide and air-pressure correction of the vertex of the “modern” notch (= MSL before the recent sea-level rise) was measured between -19±6 and -25±6 cm at Fiscardo and between -34±6 and -43±6 cm at Ithaca. The presence of this “modern” notch at the same depth on both sides of the Ionian Thrust would give evidence that both areas were not affected by the co-seismic vertical movements that occurred in 1953 in the wider area, while a greater depth in Ithaca could be an effect of co-seismic subsidence. Both cases are discussed and analysed in this paper. Assuming that the development of the “modern” notch was produced by bioerosion, it is possible to deduce a period of relative sea-level stability before the 19th century during 2.4 to 4 centuries at Ithaca and 1.5 to 4 centuries at Fiscardo. Over the longer term, the tectonic behavior of Ithaca differs from Fiscardo. At Ithaca no evidence of emergence has been found and Holocene vertical movements

have been only of subsidence: fossil submerged tidal notches can be distinguished below MSL at depths (±6 cm) of about -40 (modern), -60, -75, -90, -100, -120, -130, -140, -150 and -220 cm. A southward tilting of the island is suggested from the -110 cm notch, but this is not the case for the -70 cm shoreline. On the east coast of Fiscardo Peninsula impacts of ancient earthquakes have left some marks (±6 cm) of emergence at about +15 and +40 cm, and of submergence at about -20 (modern) -35, -50, -60, -70, -80, -90, -100 and -230 cm, with even some evidence of past uplift and subsidence at the same sites.