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About Niigata

Niigata Prefecture is a prefecture of Japan located in the Chūbu region of Honshu. Niigata Prefecture is the fifth-largest prefecture of Japan by geographic area. It stretches about 240 km along the Sea of Japan, from the southwest to the northeast, with a coastal plain between the mountains and the sea.
The prefecture is generally divided into four geographical areas: Joetsu region in the south, Chuetsu in the center, Kaetsu in the north, and Sado Island. Generally, Niigata is famous for its Sake and rice. Also skiing is very popular due to the heavy snowfalls during the winter season.
25% of the total land area of the prefecture is designated as Natural Parks, Quasi-National Parks; and Prefectural Natural Parks.

To show the diving The Sado jima Island diving is popular among the local divers. The Asian Wrasse, endemic to our local ocean, here was the Wrasse that was shown in the Movie “Oceans”. In this movie, you can see the dynamic underwater terrain with abundant marine life of the Ocean of Niigata.

Local Areas

Niigata Area Map

Areas in Niigata


Enjoy both Macro and Wide water diving at the No.1 Beach point in Niigata

Oyashirazu seashore is located in Niigata prefecture where it wa famous for it's steep precipice reaching into the Ocean, Due to it's landscape, it is also famous for it's visibility.
The recommended diving seasons are from Spring to Autumn. During Winter the waves are higher and more violent.

Diving Site (Oyashirazu)

What you can see

All year round:(Winter not recommended due to sea condition)
-Variety of nudibranch
-Variety of Shrinps and Crabs
-Variety of Macro marine life

Spring months: 
-Beautiful seaweed forest

Summer months: 
-School of Japanese amberjack (Seriola quinqueradiata) 
-School of horse mackerel(Trachurus japonicus ) 
-School of barracuda(Sphyraenidae)
-School of pearl-spot chromis (Chromis notata)
-largescale blackfish (Girella punctata)
-bigfin reef squid; oval squid (Sepioteuthis lessoniana)


A shallow beach diving area. There is a guide cable from the entry point to guide you underwater and the maximum depth is only 10m. The water temperature goes up to 25-27c from the early summer to the autumn season. Here you can enjoy the smaller marine animals of the ocean of Japan.

Diving Site(Kashiwazaki)

Sadoga Island

From Macro to Wide lenses diving, you can enjoy the variety of  underwater natural life 

Sado Island is located off the coast of Niigata prefecture and is the sixth largest island of Japan in area following the four main islands and Okinawa Island. The island consists of two parallel mountain ranges running roughly southwest–northeast, enclosing a central plain. Its rich history and relaxed rural atmosphere make Sado one of the major tourist destinations in Niigata Prefecture. 
For diving, the best condition is said to be in August when the water temperature and visibility is at it's best. Among the Japanese divers, Asian sheepshead wrasse is popular in this area. The ocean at Sado Island was introduced in the movie "Oceans" a few years ago.

Diving Site(Sadoga Island)

What you can see

All year round:
-Variety of nudibranch
-Variety of Shrinps and Crabs
-Variety of Macro marine life

April to June: 
-Sea kelp jungle

July to September:
-Asian sheepshead wrasse(Semicossyphus reticulatus)

October to December: 
-School of Japanese amberjack(Seriola quinqueradiata)
-Red seabream(Pagrus major)

January to March: 
-Smooth lumpsucker(Aptocyclus ventricosus,Pelagocyclus vitiazi)
-spear squid (Loligo bleekeri)

Average Water Temperatures