Natural driftwood collected from the sea in Izu. It has only been rinsed with water and dried in the sun; it has not been treated to remove tannins or tested for sinking. Please use at your own discretion for aquariums, etc. Use it as a material for aquariums, terrariums, gardening, crafts, and DIY projects. *If you wish, I can include up to two small pieces of driftwood as a bonus, so please send me a message. Please choose from the last photo. (The bonus items are also available separately, and will be discontinued when they run out.)