People credited with this unit standard are able to: describe the procedures for receiving oyster (tio) spat from the hatchery at the farm shed; fill and close oyster (tio) grow-out units; set out oyster (tio) grow-out units in the growing area; grade and rumble single seed oyster (tio); identify and describe maintenance requirements of stocked oyster (tio) grow-out units; harvest oysters (tio) from grow-out units; describe the regulatory requirements for the harvesting of oysters (tio) for sale; and describe Maori (tikanga) cultural protocols that influence the occurrence of harvesting from oyster (tio) farms; and maintain throughput.