@joydaniel.s —The Kali Biru River is located in the Raja Ampat region of Indonesia, in the West Papua province. It is a small river that flows through a dense forest. The river is called Blue River because the water is naturally blue in color. This is due to the absorption of sunlight by the water molecules in the river, which absorbs the longer red and yellow waves in the light spectrum before the shorter blue waves. This causes the water to appear blue to the human eye. Would you swim here? 🎥 @joydaniel.s 📍Kali Biru, Raja Ampat, Indonesia 🇮🇩