In order to describe seabed habitats and to identify and quantify spatial patterns information is needed at different scales. Whereas ground-truthing techniques are used to gain point information, remote sensing techniques are used to obtain information on a larger scale. To link seabed samples taken with grabs and cores to a wider patterns remote sensing techniques as side scan sonar, multibeam and video imaging are often used. For the latter, however, the Dutch waters are often too turbid to obtain good images. In order to improve information obtained by photography and video a “water lens” system was developed and tested.
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