See the overcriminalized.com website. The mens rea requirement is today sometimes reduced almost to the vanishing point. A citizen is now required to take ever more elaborate precautions to ensure that he or she does not engage in some violation.
If you're talking about the lobster case, the business is required to know the regulations about the business they're in.
But I can't see any way to get around requiring that.
Of course the regulating is out of hand, stupid and even counter-productive at times.