; or (ii) plastic, unless a suitable replacement does not exist; and (B) does not produce finfish for commercial purposes. (2) Seaweed The term seaweed means any macroscopic, multicellular marine algae species. (3) Secretaries The term Secretaries means— (A) the Secretary; and (B) the Secretary of Commerce, acting through the Under Secretary of Commerce for Oceans and Atmosphere. (b) Reports (1) Preliminary report (A) In general Not later than 2 years after the date of enactment of this Act, the Secretaries shall jointly submit to Congress, and publish on the websites of the Department of Agriculture and the National Oceanic and Atmospheric Administration, a preliminary report analyzing the following: (i) The effects of coastal seaweed farming on— (I) surrounding communities; (II) the ecosystem; and (III) marine and coastal wildlife. (ii) Best practices for cultivating and sourcing local seeds to propagate for coastal seaweed farming, including practices based on traditional ecological knowledge. (iii) Best practices, including practices based on traditional ecological knowledge, to prevent the escape or spread during coastal seaweed farming of any organism that would— (I) alter the natural ecosystem; or (II) present a biofouling risk. (iv) Best practices, including practices based on traditional ecological knowledge, relating to species selection, harvesting cycles, spatial planning and siting, engineering and design, and environmental aspects of coastal seaweed farming that— (I) maximize benefits, and avoid adverse effects, on the marine ecosystem and marine and coastal wildlife; (II) lead to optimal yields; (III) account for the impact climate change may have on natural habitats and coastal seaweed farming operations; (IV) minimize entanglements and other harmful interactions between marine life and nearshore seaweed farming infrastructure and gear