Located in the western part of Ehime Prefecture, Akihama is a beautifully scenic sea with a rias-style coast and a fine white sandy beach of about 300m in length. You can enjoy a wide range of life forms, from macro to migratory and rooted large fish.

Qinghai Island is a national park and is an inhabited island connected to the mainland by a bridge. There are two gravel beaches that offer boat diving, and since the two beaches are in opposite directions, they are rarely cancelled due to weather.

At Coral Beach on the uninhabited island of "Deer Island," National Park Special Protection Area No. 7, the water suddenly deepens from shallow to deep at a 45-degree angle. A rich ecosystem has been built here, with coral and shallow bays scattered about that serve as shelter for small fish, and deeper areas in the immediate vicinity. In summer, schools of yellow croaker appear in this area at a high rate, and kampachi, horse mackerel, squid, and other fish congregate to prey on them.

National Park Special Protection Area, site 5, Black Fly. Because the currents are often fast, we often choose this point on days when the tide is not moving and the sea conditions are favorable. This is a special point with an overwhelmingly large number of fish, and across the rocks to the north is a hard coral colony and to the south is a large colony of soft corals and nannyo goatfish. This is a place where you can enjoy the condensed scenery of the ocean in this area at a single point.

This dive site is just a two-minute boat ride from the West Sea, and it can also be reached by swimming in approximately 25 minutes. For those feeling adventurous, swimming to this site is an option, especially during the cooler months when catsharks are plentiful, and jawfish habitats are spread across the area. Typically, it serves as the first dive site due to its deeper average depth. It’s also well-suited for deep diving training, allowing divers to quickly descend to depths of up to 40 meters. Additionally, it’s an excellent choice for those interested in participating in a training course.

This is the first site in the National Park Marine Protected Area, the “Flower Garden site #1“. It is a special dive site that is difficult to anchor and can be dived by drift diving; it is easy to dive safely in the shallow range of 5m-12m, but the current is often too fast, so choose the sea conditions and go there when it is not a problem.

This is a point where more than 20 square iron boxes of 3m in length and width are sunk. The former Nishinoumi Town sunk many of these boxes a long time ago in order to provide a home for fish. The place is crowded with migratory fish and the boxes are falling down on the sandy bottom. You can often take the route of going around and coming back to see the fish, but if you like macro, you can stay here and find pikachu and other nudibranchs.

Nishiumi is located at the southwestern tip of Ehime Prefecture, on the border with Kochi Prefecture, and around the West Sea Peninsula, southwest of Aina Town. Boat diving is the main activity, but beach dives are also available.

Swim the mid-water to the tip with the coral ridge on your right, and you may see a large school of Japanese horn sharks descending from above. Large stingrays and turtles live in the neighboring waters, so you may be lucky enough to see them. After waiting for the school at the tip, you will see a gentle slope with a carpet of soft corals, gradually getting shallower and shallower until you reach the 5-meter safety stop, where kibibinago (sand eel) and other fish hang out. After the safety stop, we cross the natural maze created by the ridge and return to the boat.

This dive site is characterized by clusters of both soft and hard corals at a depth of approximately 20 meters. Frogfish seek refuge within the crevices, and at times, schools of migratory fish make their way through. While a diverse range of fish gather in this area, the presence of strong currents often requires careful consideration of diving conditions. Although typhoons had previously caused significant damage to the hard corals, there are indications of recovery as of 2023, making this site all the more appealing to divers.