section 501(a) of such Code. (5) Seafood industry The term seafood industry means shellfish growers, shellfish harvesters, commercial fishermen, and recreational fishermen. (e) Authorization of appropriations There is authorized to be appropriated to the Administrator $6,000,000 for each of the fiscal years 2021 through 2025 to carry out this section. 1004. Improvements to the National Oceans and Coastal Security Act (a) Definition of tidal shoreline refined Section 902 of the National Oceans and Coastal Security Act ( 16 U.S.C. 7501 ) is amended— (1) by amending paragraph (7) to read as follows: (7) Tidal shoreline The term tidal shoreline means a tidal shoreline or a Great Lake shoreline as such terms are used in section 923.110(c)(2)(i) of title 15, Code of Federal Regulations, or a similar successor regulation.