Burning off an Excess of Testosterone
There is no mistake when a pod of males arrive in Exmouth Gulf. The water boils as pods of twenty or more charge around at 10-12 knots for hours on end.
You can't help be reminded of young males in their first cars showing off to what they believe to be an admiring audience.
Head lunges are common and spectacular as 40 tonnes of whale lands on top of a hapless companion.
Mating is also on their minds and we have witnessed some persistent pursuits of mothers with calves. It is excruciating watching the mothers twisting and turning to throw the males of the chase as an exhausted calf tries to keep pace.
Just for fun it seems, the boys will sometimes run a mock charge at stationary boats. Black heads are held high and they push a bow wave of white water ahead of them. It can be a little intimidating as they wait until they are close before diving and going on their way.