1. Short title This Act may be cited as the Coastal and Ocean Acidification Stressors and Threats Research Act of 2018 or the COAST Research Act . 2. Purposes (a) In general Section 12402(a) of the Federal Ocean Acidification Research and Monitoring Act of 2009 ( 33 U.S.C. 3701(a) ) is amended— (1) in paragraph (1)— (A) in the matter preceding subparagraph (A), by striking development and coordination and inserting coordination and implementation ; (B) in subparagraph (A), by striking acidification on marine organisms and inserting acidification and coastal acidification on marine organisms ; and (C) in subparagraph (B), by striking establish and all that follows before the semicolon and inserting maintain and advise an interagency research, monitoring, and public outreach program on ocean acidification and coastal acidification ; (2) in paragraph (2), by striking establishment and inserting maintenance ; (3) in paragraph (3), by inserting and coastal acidification after ocean acidification ; and (4) in paragraph (4), by inserting and coastal acidification that take into account other environmental and anthropogenic stressors after ocean acidification . (b) Technical and conforming amendment Section 12402 of the Federal Ocean Acidification Research and Monitoring Act of 2009 ( 33 U.S.C. 3701(a) ) is amended by striking (a) Purposes.— . 3. Definitions Section 12403 of the Federal Ocean Acidification Research and Monitoring Act of 2009 ( 33 U.S.C. 3702 ) is amended— (1) in paragraph (1), by striking of the Earth’s oceans and all that follows before the period at the end and inserting and changes in the water chemistry of the Earth’s oceans, coastal estuaries, and waterways caused by carbon dioxide from the atmosphere and the breakdown of organic matter ; (2) in paragraph (3), by striking Joint Subcommittee on Ocean Science and Technology of the National Science and Technology Council and inserting National Science and Technology Council Subcommittee on Ocean Science and Technology