This is how fresh water chestnut looks like. Before coming to China I have never seen or eaten fresh water chestnut, only canned one. But here in China you can find the fresh one everywhere, as it is a Chinese/ South East Asian vegetable.
The skin is very thin and soft and it is easily peeled off. The white inside has a bit different crunchiness then the canned water chestnut has. The fresh ones reminds a lot of eating green apple. And the colour is also more milk-white, it looks wonderful in dishes.