2D reflection seismic data were acquired between September 14th to October 9th 2009, using the BIO Hespérides in the framework of the HERMESIONE cruise with Miquel Canals, University of Barcelona as the responsible PI. The seismic source used in the Eivissa Channel was a string of two BOLT® 1900LL guns in a cluster configuration towed 42.5 m beneath the stern of the vessel. The capacities of the guns used in this campaign are as follows: cluster of 40+40 cubic inches (cu. in.). The gun spacing is 0.8 metres between guns in the same cluster. The seismic source array was located at 2.5 m water depth. The firing frequency was 6 seconds.The single-channel streamer model 16.3x40.175 manufactured by SIG France®, with a length of 150 meters of active section, is divided into three active sections of 50 meters each. Each of the active sections is configured to form one channel, adding the 40 hydrophones that make up each of them, obtaining 50 metres of separation between the three groups. The separation between hydrophones is 1.25 metres. The streamer was at 0.5 – 1.5 m beneath the sea surface. The data is projected to UTM WGS 1984 31N.