Biodiversity Center collects the results of the Green Census, including reports and drawings, as well as other documents on the natural environment and biodiversity, and holds them in safekeeping for future generations. To assist with research efforts, the center also preserves specimens of rare wildlife (including the Japanese Crested Ibis and Iriomote Cat), and other important specimens that might otherwise be lost if dispersed among universities and research institutes.

Examples of stored specimens
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	Japanese Crested Ibis: Nipponia nippon
	Steller's Sea Eagle: Haliaeetus pelagicus pelagicus
	White-tailed Sea Eagle: Haliaeetus albicilla albicilla
	Blakiston's Fish Owl: Ketupa blakistoni blakistoni
	Japanese Crane (Red Crowned Crane): Grus japonensis
	Short-tailed Albatross: Diomedea albatrus
	Iriomote Cat: Felis iriomotensis
	Tsushima Leopard Cat: Felis bengalensis euptilura