Cal. Fish & Game Code § 7852.1

The department may refund the fees paid for a commercial fishing license or stamp, a commercial boat registration, or a commercial fishing permit to the estate of the deceased holder of the license, stamp, registration, or permit, if proof is provided by the estate that the death of the holder occurred prior to the opening of the season for which the license, stamp, registration, or permit was valid. The department may deduct from the refund an amount equal to the cost of issuing the refund, but not to exceed twenty-five dollars ($25).