Number of Recorded Indonesian Marine Fauna Species up to 2022

According to Low Carbon Development Indonesia (LCDI), a total of 89,101 species of Indonesian fauna were recorded by 2022. The identified species are predominantly vertebrates, including birds, freshwater fish, reptiles, mammals, and amphibians.

LCDI also analyzed Indonesian marine fauna data up to 2022. The data is sourced from the National Report (2019) and the National Research and Innovation Agency/BRIN (2022 & 2024). This marine fauna includes:

• Marine fish: 3,478 species (17.39% global proportion)
• Marine crustaceans: 1,869 species (3.12% global proportion)
• Cnidaria: 1,159 species (10.54% global proportion)
• Marine mollusks: 1,087 species (1.98% to 2.17% global proportion)
• Echinodermata: 668 species (9.54% global proportion)
• Polychaeta: 580 species (5.06% global proportion)
• Marine reptiles: 52 species (56.52% global proportion)
• Marine mammals: 35 species (38.89% global proportion)

According to LCDI, this data shows that 35 out of 90 species (38.89%) of marine mammals can be found in Indonesia. Furthermore, 56.52% of the world's marine reptiles can also be found in Indonesia.

"Through the development of biosystematic studies, the richness of Indonesian fauna has the potential to increase through biodiversity exploration activities and the discovery of new species," stated LCDI in the *Indonesia Biodiversity Strategy and Action Plan 2025-2045*.

(Read: Number of Endangered Indonesian Wildlife and Plant Species, 2023)