Ключевые слова: antifouling, artifact, before and after, blue, change, cleaning, clear water, coating, comparison, contrast, corrosion, damage, decay, discovery, environment, experiment, exploration, half, maintenance, marine, metal, ocean, orange, pollution, problem, protection, repair, restoration, rust, science, sea, shipwreck, silver, solution, split shot, submerged, surface, technology, transformation, underwater, water,