It shall be unlawful to send, bring or cause to be sent or brought into the City and County of San Francisco any live crabs, crawfish or other shellfish unless the same be in good healthy condition.
It shall be unlawful to prepare for food for human consumption any crabs, crawfish or other shellfish which are not at the time of preparation alive or in good wholesome condition, or to sell, expose or offer for sale or have possession of the same.
It shall be unlawful to send, bring or cause to be brought into the City and County of San Francisco any cooked crabs, crawfish or other shellfish, unless the same shall have been cooked for a period of not less than 40 minutes in boiling water at the time of preparation, and properly packed in ice while in transit to this City.