Cal. Fish & Game Code § 7702

The department may enter and examine any canning, packing, preserving, or reduction plant, or place of business where fish or other fishery products are packed, preserved, manufactured, bought or sold, or board any fishing boat, barge, lighter, tender, or vehicle or receptacle containing fish, and ascertain the amount of fish received, or kind and amount of fishery products packed or manufactured and the number and size of containers or cans for fishery products purchased, received, used, or on hand and may examine any books and records containing any account of fish caught, bought, canned, packed, stored or sold.