They reckon if you farm the Hikurangi Swamp you know what to expect.
But four marlin turning up in this week's floodwaters, that's definitely unexpected.
If you farm the swamp, the soil is rich, the paddocks are flat - it is a place of bounty, with a catch.
Mother Nature occasionally ruins things for dairy farmers by flooding the place.
Read more: Dumped marlin found on flooded Hikurangi Swamp farm