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Laser Photogrammetry

There is a need for an accurate method to obtain shark size data to allow assessment of growth rates from year to year, and to allow monitoring of any shifts in size distributions.

Laser photogrammetry uses two parallel lasers that project dots a known distance apart onto the object being photographed. A digital photograph is taken and the laser projections on the image provide a scale bar that can be used to measure the size of physical traits in the image. This study will not only measure total length but will also assemble a range of morphometric traits for suitability for use as length validation methods.