Orca mothers are known from previous research to provide their female offspring with less support than their male offspring, especially after daughters reach adulthood. The team looked at data ...

A new study has found that male southern resident killer whales are less likely to get scraped up by other whales when they have their post-menopausal mothers by their sides.

The adult male killer whale Moctezuma and five other killer whales (two adult females, two juveniles, one calf), in the vicinity of the juvenile whale shark, measuring around 6 meters.

A fully grown male orca is one of the planet’s fiercest hunters. He’s a wily, streamlined torpedo who can weigh as much as 11 tons. No other animal preys on him.