The Red area is the core zone of the Marine park which has the highest value of variety marine file. Dive sites are mostly located here.
 

The Nha Trang Bay is one of the 29th most beautiful Bays in the world thanks to its beauty and its high biodiversity value. The Bay is home to the most beautiful coral reefs of Vietnam. Though not as large as The Great Barrier Reef in Australia, and may not have as thrilling marine life as other bays, thanks to the high biodiversity concentration, the Bay is a humble area, home to over 350 species of hard coral (45% of all coral species worldwide). With the variety of the coral are a range of marine species that may be found in warm water areas. Also the mountainous seascape is home to colonies of the sea swallow salagane, famous for birds nest soup!

Corals develop on rocks. They live and grow in the shallow and warm currents of tropical oceans. Coral can catch plankton using stinging cells on their tentaes. Each year many species can grow only 1 centimeter: it takes thousands of years to form a coral reef as it is now.

Weathers characteristics during the year
 

Nha Trang	Jan.	Feb.	Mar.	Apri.	May	Jun.	July	Aug.	Sep.	Oct.	Nov.	Dec.
Visibility (m)	7	10	15	18	20	20	20	20	17	15	10	5
Water temperature (celsius)	22	23	25	26	27	28	28	29	28	27	25	23
Weather	SCR	SC	SC	S	S	S	S	S	SC	SC	SCR	SCR

S: Sunny, C: Cloudy, R: Rainy

http://www.vietnamWeather.net