Khanh Hoa, July 9 -- As part of Nui Chua National Park - a UNESCO-designated World Biosphere Reserve - Vinh Hy Bay in Vinh Hai commune in the south central province of Khanh Hoa is emerging as one of the hottest destinations for domestic and international tourists this summer. Viewed from the scenic coastal road DT702, Vinh Hy Bay resembles a watercolour painting framed by rolling mountains and emerald water. Tour boats glide across the sea, leaving white foam trails that enhance the bay's poetic charm. A highlight is the glass-bottom boat tour, where visitors can admire vibrant coral reefs through a five-metre-long transparent panel. The closely clustered, colourful corals create a mesmerising underwater kaleidoscope. From the boat's sid...