Stranding events: large baleen whales. a Fin whale Balaenoptera physalus stranded at Baía do Japerica, São João de Pirabas municipality (0°45'S, 47°4.2'W), eastern coast of the Pará state. Note the good condition of the carcass and the strange swelling on the top of the head (see white arrow) (photo by GEMAM/MPEG) b A newborn Bryde’s whale Balaenoptera brydei stranded on the east coast of Marajó island (0°51.6'S, 48°30'W), Pará on 15 September 2012 (photo by GEMAM/MPEG) c Humpback whale Megaptera novaeangliae stranded at Praia do Rio Novo, Tutóia municipality, Maranhão state (2°42.6'S, 42°26.4'W), note the absence of skull on the carcass (photo by A.F. Costa) d Sei whale Balaenoptera borealis stranded at Fernandes Belo, Viseu municipality (1°10.8'S, 46°5.4'W), the particular coloration of the baleen plates and slightly arched head are diagnostic characters to identify the species (photo by DEMA/PA).