0307.71.00 - Live, fresh or chilled

This HTS category, 0307.71.00, specifically covers live, fresh, or chilled clams, cockles, and ark shells. These bivalve molluscs fall under the broader classification of shellfish within Chapter 3 of the Harmonized Tariff Schedule. The emphasis on "live, fresh or chilled" indicates that the product has not undergone any freezing process.

It is crucial to distinguish this category from its siblings. HTS 0307.72.00 exclusively classifies these same types of molluscs when they are "frozen." Therefore, the key differentiator is the preservation method applied. If the product is not frozen, it belongs here. The "Other" sibling category, 0307.79.01, would typically encompass other forms or preparations not explicitly covered elsewhere within the clams, cockles, and ark shells classification.

Within this "live, fresh or chilled" classification, further subcategories exist to refine the specific type of clam. The structure indicates a division for "Clams:" generally, followed by "0307.71.00.90: Other," which suggests a more detailed breakdown or residual category for specific clam varieties that do not fit into a more precisely defined sub-classification. This allows for granular classification based on species or presentation.