Evidences of attack of a killer whale on a calf southern right whale in southern Brazil 25 de octubre de 2019 Webmaster Paulo H. Ott, Federico Sucunza, Janaína Wickert, Daniel Danilewicz, Maurício Tavares Nota Palabras clave: Eubalaena australis, interacción predador-presa, marcas de dientes, Orcinus orca, predatory-prey interaction, stranding, tooth marks, varamiento