1. Short title This Act may be cited as the Coastal Communities Ocean Acidification Act of 2023 . 2. Definitions Section 12403 of the Federal Ocean Acidification Research And Monitoring Act of 2009 ( 33 U.S.C. 3702 ) is amended— (1) by striking paragraph (4); (2) by redesignating paragraphs (2) and (3) as paragraphs (3) and (4), respectively; (3) by inserting before paragraph (3), as so redesignated, the following: (2) Indian tribe The term Indian Tribe has the meaning given the term in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 ). ; (4) in paragraph (3), as redesignated by paragraph (2), by inserting an increase of before carbon dioxide ; and (5) by adding at the end the following: (6) Subcommittee The term Subcommittee means the National Science and Technology Council Subcommittee on Ocean Science and Technology. (7) United states The term United States means the States, collectively. . 3. Improvement of collaboration on ocean acidification (a) Ongoing input mechanism Section 12404(c)(2) of the Federal Ocean Acidification Research And Monitoring Act of 2009 ( 33 U.S.C. 3703(c)(2) ) is amended— (1) in subparagraph (B), by striking ; and and inserting a semicolon; (2) in subparagraph (C), by striking the period at the end and inserting ; and