2005 California Fish and Game Code Sections 6680 Article 2. Royalties

6680.  In addition to the license fee provided for in this chapter,
every person harvesting kelp or other aquatic plants shall pay a
royalty, as the commission may prescribe, of not less than five cents
($0.05) per ton of wet kelp or wet aquatic plants harvested.
   Any revenues derived from such royalties shall not be available
for expenditures until appropriated.