Project

Understanding the marine environment is a key component to a more sustainable Earth. Technologies to automate data collection and analysis of the marine environment are necessary. Underwater cameras and AI (here in the form of computer vision algorithms) are predicted to play major roles in this regard. This research project takes its starting point in a recently established underwater camera setup that captures video in various conditions. The project aim is an underwater computer vision system that can estimate the visibility, prune the massive amounts of video so only images containing marine organism remains, and finally classify the marine organisms.

In Jammerbugt in Skagerrak, some of the most intensively fished Danish sea areas are found. The area is particularly characterised by the fact that all of the most important types of Danish fishing methods for demersal fishing for food fish take place. This applies to gillnets, which are fixed fishing gears, as well as beam trawls, purse seines and trawls, which are bottom-towed fishing gears. The different gears physically affect the seabed in different ways. Fixed fishing gears have relatively low impact and are therefore not included in this project. The habitats on the seabed in the area and the fauna associated with them have not been studied in particular detail. This is important in terms of being able to assess the effect of bottom-towed fishing gears.

There has therefore been a desire to have the impacts from bottom-towed fishing gears, with a main focus on beam trawls, investigated. Through monitoring work in 2023, this research project has investigated fishing activities, the impact of bottom-towed gears, habitats, fauna and biodiversity in general. Many different monitoring tools have been used to provide a broader understanding of these conditions, including: sidescan sonar, vessel satellite data, underwater drone, underwater video camera, towed Ockelmans sled, Van Veen grab for bottom samples, sound recordings and e-DNA. Taken together, the studies provide new general insight into marine nature and impacts from fishing activities with bottom-tow fishing gear in Jammerbugt.