It is unlawful to sell or offer to sell shellfish in this state unless the shellfish bear an approved shellfish tag or label indicating compliance with the sanitary requirements of this state or a state, territory, province, or country of origin whose requirements are equal or comparable to those established pursuant to this chapter. The department, a fish and wildlife officer, or an ex officio fish and wildlife officer may immediately seize containers of shellfish that are not affixed with an approved shellfish tag or label.