This report summarises a stock assessment of Sub-Antarctic ling (LIN 5&6, excluding LIN 6B) for the 2020–21 fishing year. The main indices of abundance were trawl surveys and the commercial longline standardised catch per unit effort series. Natural mortality was shown to be poorly estimated, with bias, and was hence assumed to be 0.18 y-1. The initial biomass was lower than in the previous assessment at about 187 350 t; stock status in 2021 was estimated at 71% B0.

A roving-access survey design is proposed to estimate the harvest of pāua (Haliotis iris) by amateur fishers. There are multiple access points from a coastal highway. The survey uses an instantaneous count of potential pāua gatherers in the water during a transit of the coast, to provide an estimate of total effort in each spatial and temporal stratum, and a separate concurrent on-site access survey to conduct interviews of fishers at the completion of trips to estimate catch per unit effort.