Grandmother whales help in pod with rearing of young

When I read about whale grandmothers running creches for their grandchildren while their parents went out to work — ie to find and round up fish to feed the family — I was, of course both touched and intrigued.
In fact, it was less sentiment and more wonderment that attracted me to this newly ‘discovered’ and scientifically proven fact which indigenous sea-people, from Inuit Eskimos to South Pacific islanders have, no doubt, known for millennia.