Ma'anar ƙamus na "hatimin kunne mara kunne" yana nufin nau'in hatimi da ke cikin dangin Phocidae, wanda ba shi da muryoyin kunne na waje ko pinnae. Wadannan littafan suna da ƙananan buɗewar kunne a gefen kawunansu amma ba a ganuwa a kunne, wanda ke taimaka musu wajen daidaita jikinsu da kuma tafiya cikin ruwa yadda ya kamata. Hatimin da ba a kunne ba sun haɗa da nau'ikan nau'ikan kamar hatimin tashar jiragen ruwa, hatimin launin toka, hatimin giwa, da sauransu.