The 2023 Fifth "Art and Ocean" Themed Artwork Competition Review Exhibition and Grassroots Cultural and Artistic Volunteer Service Activities were held at the Nanxing Street Community Cultural Space in Shangcheng District, Hangzhou. Cultural and artistic volunteer services entered grassroots communities, and a series of vivid ocean-themed artworks brought a high-quality visual feast to the citizens. A total of 118 submissions were received for this competition, of which over 60 finalist works exhibited covered various art categories such as Chinese painting, oil painting, printmaking, watercolor, cultural and creative works, and installations. The competition was jointly hosted by the China Academy of Art and the Institute of Deep-Sea Science and Engineering of the Chinese Academy of Sciences, and was organized by the Nanxingli Cultural Space in Nanxing Street, Shangcheng District, Hangzhou. The "Art and Ocean" competition has been held for five consecutive years and has become a themed art exhibition event with a certain reputation in the industry, continuously promoting the integration of art and science.