Natural driftwood collected from the coast of the Sea of Japan. Perfect for interior decoration or aquarium items. Although it has been cleaned and treated to remove tannins, it is a natural product and may have cracks or stains. Please check the photos! Sinking confirmed. It has been soaked in water for two months, but use in an aquarium is at your own risk. Please refrain from purchasing if you are looking for perfection, as it has been cleaned and treated by an amateur! Thank you for looking!