Biological monitoring of harbours and estuaries within the Bay of Plenty region for Environment Bay of Plenty. Sampling sites are include Tauranga and Ohiwa Harbours. Sampling frequency = annual (summer). Sampling began in 1990 and is ongoing. Number of sites = 50 total, currently only 21 of these are monitored. Extent of site = Sites at low tide mark. In estuaries: 4 blocks along 45m transect and on exposed sandy shores: 5 blocks along 60m transect. Blocks are 25m2 (5m x5m) each. Number of replicates = 6 per block. Measured variables = Infaunal communities (species identified to lowest taxonomic level possible and enumerated). Sampling protocol & QA = Internal protocol. Based on a Nested analysis of variance design (see Park (2000): Benthic Macrofauna Monitoring. Environmental Report 2000/15, July 2000. Environment Bay of Plenty) and similar to Auckland Council.