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SFL14401

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    Large mounds of Galeolaria hystrix, classified as having significant ecological national importance, grow on a reef adjacent to a Sanford mussel farm (site 8444) located north-east of the southern headland of Whataroa Bay, Port Underwood. A monitoring survey using sonar side-scan images, photoquadrats and diving surveys was conducted on these tubeworm mounds on the 7 October 2013. Information provided qualitative and quantitative data on the extent and health of the tubeworm mounds, assessing their size and extent. Results showed no significant change in the extent and health of the tubeworm mounds as a result of mussel farming activity. However, localised damage was evident, likely due to small vessel anchoring.