Oyster openers; Oyster shuckers; Oyster knives; Hand tools, namely, oyster shell crackers; Hand-operated oyster shell crackers; Hand-operated oyster shell snipper; Household appliance, namely, portable oyster openers; Household appliance, namely, lever operated oyster openers with integrated snipper and appliance base; Household appliance, namely, lever operated oyster openers which support the oysters laterally during opening to reduce the spilling of natural oyster juice therefrom; Portable, lever operated oyster openers which support the oysters laterally during opening to reduce the spilling of natural oyster juice therefrom; Oyster opener with replaceable blade; Replacement blades for oyster openers; Replacement parts for oyster openers