Succulents and semi-succulents effectively do this. The one that sprung to mind was the Baobab tree, which stores up to 120,000 litres (https://en.wikipedia.org

Succulents and semi-succulents effectively do this. The one that sprung to mind was the Baobab tree, which stores up to 120,000 litres (https://en.wikipedia.org/wiki/Adansonia https://en.wikipedia.org/wiki/Adansonia)