Coral and Tropical Fish at Kushimoto Marine Park: Peering into the Kuroshio Sea from the Underwater Observatory

What is Kushimoto Marine Park? A Place to See the Sea at Honshu's Southernmost Tip As It Is

Kushimoto Town, at the southern tip of Wakayama Prefecture. While Hashigui-iwa Rocks and Cape Shionomisaki are famous, there are also landscapes unique to this town spreading out "beneath the sea." Kushimoto Marine Park serves as the gateway to this underwater world.

The sea around Kushimoto benefits from the Kuroshio Current flowing in from the south. As a result, even while in Honshu, you can encounter coral and tropical fish reminiscent of southern seas. The coastal waters of Kushimoto have been recognized for their coral communities and even registered as a wetland of international importance, drawing attention as a place to experience the richness of the sea.

Enjoy a "No-Diving Undersea Walk" at the Underwater Observatory

The symbol of Kushimoto Marine Park is its underwater observatory. As you descend the stairs inside the tower that extends out into the sea, you can view the natural ocean exactly as it is through windows set below the surface.

The Charm of the "Real Sea" — Not an Aquarium

What spreads out beyond the windows is not a partitioned tank, but the sea itself as it is on that day.

• The way light enters and the clarity of the water varies from day to day
• Schools of fish may swim past right in front of the windows
• Depending on the weather and season, the same spot can give very different impressions

The appeal is that even those who aren't strong swimmers, small children, and seniors can feel the sea up close.

How to Enjoy Coral and Tropical Fish Even More

For Coral, Focus on "Shape" and "Color"

When you hear "coral," you might imagine vivid colors, but first try paying attention to shape. Some spread out like tables, others extend branches — each type has a completely different appearance. Small fish tend to gather around coral, and you can sense how coral serves as a home for these fish.

For Tropical Fish, the Trick Is Following Their "Movements"

Brightly colored tropical fish behave in surprisingly varied ways when you watch closely. Some stay near the coral, some swim in schools, some peek out from behind rocks — once you pick an observation point, you won't get bored. What you can see changes with the season and sea conditions, so it's best to enjoy the encounters casually, thinking, "I wonder what fish are here today."

Things to Know Before You Visit

• Opening hours, fees, and activity menus are subject to change, so be sure to check the official website for the latest information
• Visibility underwater depends on weather and wave conditions. Calm days tend to make it easier to enjoy the underwater scenery
• The seaside can be windy, so bringing a light jacket is a good idea
• The observatory involves going up and down stairs, so wear comfortable walking shoes

Incorporating It Into Your Kushimoto Trip

The Marine Park is the attraction that handles the "underwater" side of Kushimoto sightseeing. Combined with above-water scenery such as Hashigui-iwa Rocks and Cape Shionomisaki, you can experience Kushimoto's nature in three dimensions. Wrapping up a day of touring spectacular coastal views with a glimpse beneath the sea in the afternoon is a wonderful way to round out your trip.

Summary | A Seascape Unique to Kushimoto, Carried by the Kuroshio

Kushimoto Marine Park in Kushimoto Town is a place where you can truly feel the richness of the Kuroshio sea through its coral, tropical fish, and underwater observatory. When traveling in the Kumano area, attention tends to focus on mountains and ancient trails, but the world beneath the sea is also one of this region's essential charms. On your next trip to Nanki, be sure to venture "into the sea" as well.

Image: 和歌山フォトライブラリー (via 和歌山フォトライブラリー)