There are the following differences between tree oysters and raw oysters:

1. Morphology: tree oysters are smaller than raw oysters, and the shell weight of larger oysters can reach about one catty, while tree oysters are only about two ounces.

2. Taste: The meat quality of oysters is thicker and tastes better, while the taste of tree oysters is more common and not as delicious as oysters.

3. Nutrition: Both kinds of oysters contain a lot of protein, minerals, etc., but the zinc content of tree oysters is only 9.39 mg, and the zinc content per 1 grams of oysters is as high as 71.2 mg, so oysters are considered as the food with the highest zinc content.

Generally speaking, although tree oysters and oysters are different, they are both nutritious seafood.