Choosing the Best Dive Site for the Conditions – A Great Day of Macro Diving in Koza
Large swells from the typhoon arrived yesterday, and today Kushimoto was also closed due to the sea conditions.
However, depending on the conditions, we can sometimes move to nearby dive areas around Kushimoto and still enjoy diving.
Today, we headed to Koza with our guests from Japan and Austria and enjoyed three fun dives after carefully checking the sea conditions.
Visibility was around 2–7 meters due to the swell from the past couple of days, but the waves underwater were minimal, and we were able to complete all three dives comfortably.
The water temperature was around 24–25°C at the surface and about 23°C near the bottom.
Since everyone in the group loves macro diving, we spent the day searching for tiny marine life.
Even when visibility isn’t perfect, macro diving can still be incredibly rewarding, and that’s one of the great things about diving in this area.
Our first highlight was the Tiger moray eel.

Although this moray eel is relatively common in Japan, we hear that divers don’t often have the chance to see it in many other countries, making it a favorite among our international guests.
Next, we found Crimora sp. 1.
Thanks to Ueda-san from DIVE KOOZA, we had the opportunity to see it for the first time.
It was a species we had never encountered in Kushimoto before, making it a very special find. Thank you so much!

From the second dive onward, the visibility improved, making the dives even more enjoyable.
While searching for nudibranchs, we found a young Pineconefish hiding beneath a rock. It was in an unusual spot, so it was an exciting surprise.
This fish is known for having light-producing organs, and we’d love to see it glowing one day.

We also found many Neoclinus toshimaensis on top of the reefs.
This species is rarely seen on the west side of Cape Shionomisaki, where most Kushimoto dives take place, and is more typical of the eastern side.
One of the fascinating things about diving around Kushimoto is that you can see different marine life depending on which area you dive.
Typhoons can certainly affect diving conditions, but by choosing the best dive site for the day’s conditions, it’s often still possible to enjoy fantastic diving.
Thank you very much to everyone who joined us today!
Unfortunately, we will be temporarily closed tomorrow because of the typhoon.
Once the weather settles, we look forward to welcoming everyone back to the clear blue waters of Kushimoto.
If your dive trip was affected by the weather this time, we hope you’ll come back and dive with us again under better conditions.
We look forward to seeing you in Kushimoto!
Today’s Ocean Conditions (Koza area)
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- Weather: Sunny
- Air Temperature: 24–30°C
- Water Temperature: 23.1-25.0°C
- Visibility: 2-7m
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Recommended Exposure Protection
- 5mm two piece wetsuit
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- 5mm two piece wetsuit
