TV One's Piha Rescue must be the most riling 30 minutes on the box.
If you believe the folklore surrounding lemmings, this is as close our species comes to mimicking their behaviour.
Week after week in self-inflicted irritation I watch skilled lifesavers live up to their title and prevent scores of Darwin deaths.
I'm not sure what amazes me more: the sheer volume of hapless sinkers, or the patience of the tireless rescue folk who look like farmers plucking sodden ewes from a sheep-dip trough.
So I'm being a little uncharitable. No doubt there are unforeseen tidal anomalies set to trap the most cautious bather.