4. Nakajima R (2017) The role of coral mucus in coral reef ecosystems. Sea slug news letter 93, 2-4. (in Japanese)

3. Nakajima R (2014) Deep-sea creature map around Japan. In: Deep sea and Earth’s Encyclopedia (eds: Kato C, Isozaki Y, Kodaira S, Kawano K). Maruzen Press. (in Japanese)

2. Nakajima R, T. Toda, T. Yoshida and B. H. R. Othman (2004) Trophic structure of pelagic ecosystem in tropical coral reef: Which size fraction is the most important? Proceeding of 3rd Annual Seminar on Sustainability Science and Management, 366-370.

1. Nakajima R, T. Yoshida, A. Shibata, B. H. R. Othman and T. Toda (2009) Size composition of particulate organic matter in a coral reef at Tioman Island, Peninsular Malaysia. Proceedings of International Conference on Marine Ecosystem 2009, 209-220.