enquête (1) espèce (1) échantillonnage (1) recherche (1) besoin (1) surveillance (1) information (1) effet (1) distribution (1) comparaison (1) ligne (1) Mer méditerranée (1) cétacé (1) ordre (1) Catane (1) Monitoring (1) Comparison (1) Variation (1) Area (1) Surveys (1) Toothed whales (1) Common dolphin (1) Programs (1) Ionian Sea (1) Area (1) Rates (1) Tyrrhenian Sea (1) Surveys (1) Summer (1) Striped dolphin (1)