RGB images of the eight protoclusters in the COSMOS field identified in the NICE survey. The color channels are R: [4.5], G: K_s, B: Y, except for the two protoclusters covered by COSMOS-Web (Casey et al. 2023), COSMOS-SBC4 and COSMOS-SBCX3, where the color channels are R: F444W, G: F277W, B: F150W. Each image has a size of 1′×1′. The red, yellow, and cyan circles highlight the CO-detected members, spectroscopically confirmed members, and all other members identified by Sillassen et al. (2024), respectively.