As this whale rolls over onto its back as it performs a full breach, the umbilicus (“navel”) is visible as an elongate bump at the terminus of the ventral pleats. Just below it may be the genital slit. At this distance, it’s not possible to discern this whale’s sex.
Ma’alaea Bay, Maui – 17 January 2015
Megaptera novaeangliaemegapteraHumpback whalesHumpback whalebaleen whalesrorqualcetaceanswhaleswhaleHawaii's whalesMaui's whalesnorth Pacific populationBalaenopteridae