The integration of the results of spatially explicit marine science research projects can be facilitated when the different outputs use the same spatial projection and spatial grids which can nest into each other. Wood et al. (2020) used an equal area projection for the New Zealand marine environment and proposed a central point through which all grids should intersect. We provide the R code and reference to an R package which creates such grids as a baseline for future researchers.

Commercial catch and effort data and fisheries observer records of catch and discards by species were used to estimate the rate and level of non-target catch and discards in the orange roughy and oreo trawl fisheries for fishing years 2002–03 to 2019–20. Estimates were made for broad categories of catch and discards including target species, QMS species, non-QMS fish, and non-QMS invertebrate species, and estimates of annual catch were made for several of the major individual non-target species.