An oyster knife is a knife which has been specially designed for the purpose of opening oysters. It is an absolute must have if you want to prepare oysters, and it helps with other shellfish as well.
The shape of the blade on an oyster knife varies, although the blade is often triangular. It is also blunt, reducing the risk of injury, short, and very thick. A well-made oyster knife will have a thick, comfortable handle which is made from a non-slip material such as textured silicone. This ensures that cooks can hold and use the knife comfortably to shuck oysters, without worrying about hurting themselves.