The present work consists in characterizing the sedimentary distribution on the South Shetland Islands continental margin, Antarctica Peninsula, through the interpretation and correlation of high-resolution seismic profiles and geological samples. The characterization was made through echo-characters, maps of seismic amplitudes and its correlation with the collected samples, filling the gap in scientific research about echo-characters at this location. Five different echo types have been identified and classified. Echo types I and II have good seismic resolution and are characterized by continuous sharp bottom echoes with sub-parallel reflections. Echoes III and IV are characterized by difuse and very prolonged bottom echoes with no sub-bottom reflectors. Echo V is associated to glacial deposits on the upper slope in response to deglaciation and the transport of coarse grains in a muddy matrix and is characterized by diffraction hyperbolae. The echo-characters showed good correlation with geological samples collected along the Bransfield Strait and bays of the King George Island, but not completely with the amplitudes map. Echo I has medium-high amplitudes and the samples within its area of occurrence (AM-02 and AM-14) indicates silty sand and sandy silt, respectively. Echo II presents the lowest seismic amplitudes and the sample within its area (AM-17) shows a content of approximately 90% mud. Echos III and IV, located on the shallowest portions of South Shetland's continental margin, demonstrate medium-low amplitude values, and are related to samples AM-01 and AM-04, both classified as sandy-silt with approximately 35% of sand.