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Nishikawana Sea

Point introduction

The maximum water depth at the boat point is 25m, with an average depth of 15-16m. Root/GilaISOThe topography, which is a mixture of gorota and sand, combined with exquisite currents, forms the best paradise for marine life.

In particular, the radish and V-shaped valleys are of good quality due to their unique topography.SakaeDue to the influx of highly nutritious seawater, manyLarge fish live in Aya. The representative ones are 30 that can be said to be the best in Japan.Mustache where rank gathersA powerful Moroko (Kue) with a length of 1.3m. these fishThings to see all year roundis also a feature of Nishikawa name here.


There are many green turtles, and sometimes even giant loggerhead turtles. In summer, flocks of eagle rays dance wildly, and you can meet large migratory fish and seasonal migratory fish from the south.

The water depth at Beach Point is relatively shallow and calm, and can be used for snorkeling, trial diving, courses for beginners, and fun diving. In the port, you can enjoy a gentle underwater landscape that is the complete opposite of the Nishikawana sea, which is strong against the wind and has a strong ocean color.

Nishikawana Diving Point

Point A (boat)

16m to 24m (17m below the buoy)

The main point offshore . You can deploy to the whole area, and if you want to head to the shark hole area, the simplest way is to start from Buoy A. You can enjoy the beautiful scenery while diving.

Nishikawana Diving Point

C Point (Boat)

15m to 24m

The main point offshore . This popular buoy is the shortest route to the famous "V-shaped valley" in Nishikawana. If the current at point A is fast, choose point C. The water is shallow, so anyone can enjoy diving with peace of mind.

Nishikawana Diving Point

S Point (Boat)

17m to 24m (19m below the buoy)

The main offshore point. You can access the V-shaped valley via Hanare-ne. Buoys C and A are on opposite sides of the V-shaped valley, so it is possible to drift between buoys using the current, such as S⇔C and S⇔A. There are many unexplored areas in the surrounding area, so this is a point where development is expected to progress in the future.

Nishikawana Diving Point

Tekkai root (boat)

3m to 18m

A new spot where we are currently doing test diving. It will be drift style diving, and the terrain and tides are still unknown. We would like to explore this spot together with everyone, as a hidden spot close to home.

Nishikawana Diving Point Fishing Reef

Fishing reef (boat)

8 to 20m (8m below the buoy)

1m square concrete blocks are piled on the seabed as fish reefs. The reefs are covered with Ecklonia japonica, and are home to stonefish, horse mackerel, and niboshi fish. There are no currents, so you can dive safely, making it a place that can be enjoyed not only by beginners but also by trial divers. Once you get used to it, you can even drift from the reef to the C buoy.

Nishikawana Beach


This spot is often used for courses and trial diving. However, even intermediate and advanced divers can enjoy it, as the seabed covered with seaweed such as Ecklonia japonica is home to rare creatures such as sea slugs, frogfish, and pinecone fish, which can sometimes only be found in the waters south of Okinawa. The entry point is from a rocky area, so be sure to watch your step.

Nishikawana Zostera

Inside the port

It is used for trial diving and beginner courses. In recent years, the eelgrass beds have been attracting attention, and you can enjoy the eelgrass beds and the creatures that live there.

*99% of the area was lost due to the accumulation of Amakusa seaweed that flowed into the port in the summer of 2023. As of March 2024, gradual regeneration has been confirmed.

boat point

A point (A buoy)

16m to 24m

Offshore main point. If you can deploy to the whole area and aim for the shark hole area, the A buoy is the simplest. You can enjoy the beautiful scenery while descending.

​C points​(C buoy)

13m to 24m

It is a popular buoy that allows you to approach the famous "V-shaped valley" of Nishikawa name in the shortest time. ​Choose point C even if point A flows fast. The landing depth is shallow, so anyone can enjoy diving with peace of mind.

B point (B buoy)

11m to 24m

fishing reef

​ Tekkai root



​ Used for trial diving, snowling, and beginner courses. It is a beach point suitable for refresh courses for those who have a blank.


Nishikawana Ocean Park

Manager's Greetings

Hello everyone! This is Teramoto from Nishikawana Ocean Park! Everyone calls me "Teramo".

The charm of the Nishikawana sea is the abundance of fish species, the varied and dynamic underwater scenery, and the "faces of the sea" that change drastically in a good way. The Nishikawana sea is full of mysterious charm that you will never get bored of no matter how many times you dive!

Our facilities and boats are specially designed and maintained for the ease of use of divers. Even if there is a current, there is a guide chain installed in the water, so you can move around by pulling on the chain, so even first-time divers can enjoy diving with peace of mind.

We also provide support to the diving shops that use our facility so that they can use it comfortably. If there is anything we can be of help to you, please feel free to contact us.

In addition to the main offshore point, we also have gentler points for beginners so that guests can dive according to their level.

We also regularly hold inspection meetings for diving shops. We will do our best to support you in planning your future tours.

All of our staff will work together to ensure that everyone who comes to dive in the Nishikawana sea has a fun, safe and smiling day! We look forward to welcoming you.

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