Mother and calf Blue Whale (Balaenoptera musculus) fluke-up dive in the Gulf of California (Sea of Cortez), Mexico.

blue whale balaenoptera musculus gulf of california sea cortez cetacea cetacean mysticete rorqual largest biggest mammal warm blooded leviathan balaenopteridae mysticeti marine water ocean oceanic northern hemisphere mexican central america central american tropic tropics tropical pacific tail dive diving flukeup two female parent young calves baby babies offspring juvenile family families