This dataset aims to advance research in underwater object detection and localization, supporting applications in marine ecology, pollution detection, and underwater robotics. The dataset includes a diverse range of underwater scenes captured in various conditions, such as different water depths, lighting conditions, and levels of turbidity. It contains high-resolution images and videos annotated with precise bounding boxes and segmentation masks for various objects of interest, including marine life, coral reefs, submerged debris, and man-made structures.