Humpback whales (Megaptera novaeangliae) breeding off Mozambique and Ecuador show geographic variation of persistent organic pollutants and isotopic niches. - Remili A; Gallego P; Pinzone M; Castro C; Jauniaux T; Garigliany MM; Malarvannan G; Covaci A; Das K (Environmental pollution (Barking, Essex : 1987), 2020)