Kerama vs Manza: Which Okinawa Dive Area Should You Choose?

If you are planning to go scuba diving in Okinawa, two names will probably come up again and again: the Kerama Islands and Manza.

“Is Kerama better for visibility?”
“Should I dive the famous Manza Dream Hole?”
“Which area is better for beginners?”
“If I have two diving days, should I try both?”

These are questions we hear all the time.

Although both are popular diving areas in Okinawa, Kerama and Manza offer very different styles of diving.

To give you the short answer:

If this is your first time diving in Okinawa, Kerama is usually a great place to start.
If you are an AOW diver who loves dramatic underwater topography, Manza should definitely be on your list.

But this does not mean one area is “better” than the other.

The best choice depends on what kind of diving experience you are looking for.

As a dive shop based in Naha, Okinawa, we guide divers in both areas. Here is our comparison of Kerama and Manza to help you decide which one suits you best.

Kerama vs Manza: Quick Comparison

	Kerama Islands	Manza
Underwater scenery	Blue water, coral reefs, white sand and open ocean	Drop-offs, caves, vertical holes, sand and reefs
Variety of dive sites	Very high	Known for dramatic topography
From Naha	About 1 hour by boat	About 1 hour 20 minutes by car, then a short boat ride
Boat style	Stay on the boat for the day	Usually return to port after each dive
Beginners	◎	○
Open Water Divers	◎	○
Advanced Open Water+	◎	◎
Topography lovers	○	◎
Coral / tropical scenery	◎	○–◎
Worried about seasickness	△	◎
First time diving in Okinawa	◎	○

Dive sites and diving styles may change depending on sea conditions, diver experience and the boat used that day.

Why Dive the Kerama Islands?

The First Thing You Notice Is the Blue Water

The Kerama Islands are located about one hour by boat from Naha.

As you approach the islands, the color of the water often starts to change.

Visibility of around 20–30 meters is common when conditions are good, and on some summer days it can be even better.

Underwater, you may find white sandy bottoms, colorful coral reefs, sunlight streaming through the water and a seemingly endless blue ocean.

For many divers, this is exactly what they imagine when they think of scuba diving in Okinawa.

More Than 40 Dive Sites

One of the biggest advantages of Kerama diving is the huge variety of dive sites.

The area includes Zamami Island, Tokashiki Island, Maejima, Kuroshima, Nagannu and many other locations.

You may dive:

• Calm coral reefs
• White sandy bottoms
• Sites where sea turtles are often seen
• Fish-filled offshore reefs
• Drift diving sites when conditions and diver experience allow

Even though all of these dives are considered “Kerama diving,” the underwater scenery can be completely different from one site to another.

So you do not necessarily need to think:

“I already dived Kerama yesterday, so I need to go somewhere else today.”

You can easily spend two or three days diving in the Kerama Islands and still experience very different sites each day.

Why Dive Manza?

Manza is located around Onna Village on the west coast of Okinawa’s main island.

The diving style and underwater scenery are quite different from Kerama.

If we had to describe Manza in one phrase, it would be:

Dramatic underwater topography.

Drop-offs, overhangs, caves and vertical shafts create a much more adventurous underwater landscape.

Even during a normal dive, you may find yourself wondering:

“What is around the next corner?”

That sense of exploration is one of the biggest attractions of diving in Manza.

The Famous Manza Dream Hole

One of Manza’s most famous dive sites is Dream Hole.

Divers enter through an opening in the reef and descend vertically through a large underwater shaft.

The depth is approximately 27–30 meters.

After descending through the darker interior, you eventually reach an opening where the blue ocean appears in front of you.

It is a completely different atmosphere from the bright coral reefs that many people associate with Okinawa.

Because of the depth, Dream Hole is generally suitable for Advanced Open Water Divers or above.

Open Water Divers can still enjoy Manza, but they will normally dive other sites instead of Dream Hole.

It is also worth remembering that Manza is not only about Dream Hole.

There are also sandy areas, coral reefs and excellent sites for finding smaller marine life.

One of the Biggest Differences: How You Spend the Day

The difference between Kerama and Manza is not only underwater.

The schedule and boat style are also very different.

Kerama: A Full Day on the Water

On a typical full-day Kerama diving tour, you leave Naha in the morning and stay out on the boat until the afternoon.

A common schedule is:

• Two dives in the morning
• Lunch on the boat
• A third dive in the afternoon

Many Kerama trips use relatively large boats in the 50–60 ft class.

So rather than simply doing three dives, the experience feels more like:

“Spending the entire day exploring the Kerama Islands.”

Manza: Return to Port After Each Dive

Most Manza dive sites are only around 5–10 minutes from the port.

Normally, the boat returns to port after every dive.

Dive once.

Return to port.

Take a break.

Then head out again for the next dive.

This means you do not have to spend the entire day on a boat.

For divers who are especially worried about seasickness, this can be a major advantage.

On the other hand, if you want the feeling of a full-day Okinawa island-hopping dive trip, Kerama may suit you better.

Kerama or Manza for Beginner Divers?

If this is your first time diving in Okinawa, we often recommend starting with Kerama.

This is not because Kerama is always easier.

The biggest reason is the number and variety of dive sites available.

The captain and instructors can choose from many locations depending on the wind, waves, currents, visibility and the experience level of the divers that day.

This makes Kerama suitable for a wide range of divers, from newly certified Open Water Divers to people with hundreds of dives.

For AOW Divers, Manza Can Be a Lot of Fun

Manza can be an excellent choice if you:

• Have an Advanced Open Water certification
• Are comfortable with neutral buoyancy
• Are comfortable diving deeper
• Enjoy underwater topography
• Want to explore caves, drop-offs and vertical formations

It is especially worth considering if:

You have already dived the Kerama Islands several times.

The underwater landscape is very different, so Manza can add a completely different style of diving to the same Okinawa trip.

What If You Have Two Diving Days?

This is another question we are asked frequently.

If It Is Your First Time Diving in Okinawa

Kerama + Kerama

is absolutely fine.

With so many different dive sites, spending two days in Kerama does not mean repeating the same experience.

If You Are AOW Certified and Love Topography

Kerama + Manza

is a great combination.

You can enjoy the bright blue water and coral scenery of Kerama, followed by the more dramatic underwater landscape of Manza.

It gives you two very different sides of Okinawa diving.

If You Are Very Worried About Seasickness

Manza is worth considering.

Being able to return to port after each dive can make a big difference for people who are sensitive to boat movement.

Which Is Better for Seeing Sea Turtles?

We get this question all the time.

The answer is:

You may see sea turtles in either area.

However, they are wild animals, so sightings can never be guaranteed.

There is no dive site where we can honestly promise that a turtle will always be there.

And that is part of what makes diving exciting.

You never know exactly what the ocean will show you that day.

Which Area Has Better Visibility?

If underwater visibility is one of your main priorities, we generally recommend Kerama.

Because the islands are located away from Okinawa’s main island, visibility of around 20–30 meters is possible when conditions are good.

However, visibility changes every day.

Rain, wind, currents, typhoons and other natural conditions can all affect the water.

So it would not be accurate to say:

“Kerama always has 30-meter visibility.”

Manza can also have very clear water when conditions are good.

So, Kerama or Manza: Which Should You Choose?

Kerama May Suit You If:

• It is your first time diving in Okinawa
• You want beautiful blue tropical water
• You love coral reefs and white sandy bottoms
• You want a wide variety of dive sites
• You want to enjoy three dives in one full day
• You are a newly certified Open Water Diver

Manza May Suit You If:

• You are Advanced Open Water certified or above
• You love underwater topography
• You want to explore caves and drop-offs
• You want to dive Dream Hole
• You have already dived Kerama before
• You do not enjoy long boat rides

Both Kerama and Manza are excellent diving areas in Okinawa.

And if you have enough time, one of the best options is simply:

Try both.

Kerama gives you the classic blue-water Okinawa experience.

Manza gives you the excitement of exploring dramatic underwater terrain.

They feel very different underwater, and experiencing both is a great way to discover just how diverse scuba diving in Okinawa can be.

Dive Kerama and Manza with TERIYAKI DIVERZ Okinawa

TERIYAKI DIVERZ Okinawa is a Naha-based dive shop offering scuba diving tours in both English and Japanese.

If you are wondering:

“Which area is better for my experience level?”

“Can I dive Manza with an Open Water certification?”

“I have three diving days. How should I plan them?”

Feel free to ask us.

Rather than looking only at your certification level, we also consider your number of dives, how recently you have been diving and what kind of underwater experience you want.

Okinawa diving is not only about Kerama, and it is not only about Manza.

If you are traveling all the way to Okinawa to dive, we want to help you choose the area that best matches your experience and the kind of ocean you want to see.