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The dataset contains 8,610 marine debris images annotated for object detection and instance segmentation tasks, covering 40 object categories, including not only debris but also observed animals, plants, and robot parts. The annotations are provided as COCO format (.json) files, and the images are arranged in folders, each dedicated to a unique site-camera pair. All images are 1920×1080 resolution.

The data was captured using an ROV during field experiments associated with the Seaclear project and therefore includes images from a number of locations including:

• Bistrina, Croatia
• Jakljan, Croatia
• Lokrum, Croatia
• Slano, Croatia
• Marseille, France