The Riasu (or Saw-tooth) Sanriku Coastline is a raised coastline of 600km in total that spreads out from southeast of the Aomori Prefecture through the coast of the Iwate Prefecture to Ojika Peninsula in Miyagi Prefecture. Sanriku (or three riku) is a generic term referring to Mutsu in Aomori, Rikuchuu in Aomori and Rikuzen in Miyagi. The Riasu coast is a jagged stretch of coastline that consists of many long, narrow coastal inlets which uniformly cut into the coastal lands creating the appearance of saw teeth.
Offshore at the Sanriku coast is where the Okhotsk current (Oyashio) , a cold current, and the Japan Current (Kuroshio), a warm current, meet, creating a rich fishing spot that is considered to be one of the Four Great Fishing Grounds in the world.
The precipitous cliffs of the Sanriku coast are also an ideal breeding ground for wild birds such as osprey, Japanese cormorant and black-tailed gull.
Along the Riasu Sanriku Coastline there are many spectacular vistas created by the raging waves and rain storms of the Pacific Ocean.
Todo (Sea Lion) Island is located to the right north of Cape Sukoton at the north end of Rebun Island. The island with a circumference of 4 km is surrounded sheer cliffs. You can go to the island by a fishing boat from Rebun Island, but there are no piers. As the boats come alongside some rocks or cliffs, you cannot make a landing when the sea is rough. The only man-made structures on the island are a watch house and a rotting remnant of the old watch house.
Todo Island is a plateau-like island, which is the treasure trove of alpine plants. Many species of plants that are peculiar to Rebun Island can be found on this island, too. In summer seals come and rest themselves here, and so do sea lions in winter. It is also the breeding ground of slaty-backed gulls and cormorants. Todo Island is a precious place where nature remains intact.
Cape Sukai is one of the representative scenic spots of Rebun Island in the northernmost part of Hokkaido. You can get to the cape by sightseeing bus or by taking the 4 hour trekking route from Cape Sukoton via Cape Gorota.
The attraction of Cape Sukai is the beauty of the sheer cliffs and rugged coastline with many oddly-shaped stones and rocks as well as the plentiful alpine plants such as Ezo daylilies and Ezo gentians (Gentiana triflora var. japonica).
Looking down at the ocean below, you will be astounded by crystal clear water. The water is so clear that you will feel you can touch the bottom with your hand. It is one of the most beautiful parts of the sea of Rebun. The color of the sea changes to various colors such as light green and emerald green according to the depth of water and the course of sunlight. You will be so fascinated that you may not be able to turn your eyes away.
Nippo Coast is a 120 km ria coast from Saganoseki Peninsula in Oita Prefecture to Mimitsu Beach in Hyuga City, Miyazaki Prefecture in the eastern part of Kyushu. This ria coast was formed by the subsidence of the ground due to the crustal movement of the Kyushu Mountain Range, which separated Kyushu from Shikoku. The name “Nippo (日豊)” is the combination of the names of old provinces, Hyuga (日向) province (present Miyazaki Prefecture) and Bungo (豊後) province (present Oita Prefecture). The whole part of the coast is designated as Nippo-Kaigan Quasi-National Park.
Seen from Cape Hyuga, which is protruding in to the Hyuganada Sea, the white splashes of restless waves make an exquisite contrast with the continuing sheer cliffs. As the seawater is warm and clear, various marine animals such as table corals, Favia corals and stony corals inhabit in the sea.
Futo Coast on the west side of Izu Peninsula is a scenic coast with a total length of 900 meters. It is a beautiful coast with shining ocean and indented coastline with bizarre stone formation.
At low tide, pools of seawater are formed in the cove on the other side of the bathing beach, where you can enjoy watching or catching inshore fish and sea shells. With clear sea and good natural environment, it is one of the few distinctive diving spots in Izu Peninsula, a good hidden spot for surf fishing and marine sports. It is also a fine place to view the sunset. The sun setting among small islands is absolutely beautiful.
As the promenade is set out from the northern end of the coast to Tago, you can enjoy 1 hour walking while viewing oddly-shaped stones and the indented coastline with colonies of sea plants on the way. There are other sightseeing spots such as Dogashima and Cape Koibito-misaki in the vicinity.
Sanbaseki Gorge in the border of Fujioka City, Gunma Prefecture and Kamikawa-machi, Kodama-gun, Saitama Prefecture is nationally designated as a Place of Scenic Beauty and a Natural Monument. Surrounded by steep cliffs, the 1.5 km riverbed of the Kannagawa River is dotted with 48 huge or monstrous-shaped rocks. As early as in the Edo period (1603-1868), names were given to each of these oddly-shaped stones, which were collectively called “the 48 Fine Stones” and the gorge was a popular scenic spot visited by a lot of sightseers.
The gorge is considered to be a geologically precious zone, where green crystalline schist crops out on the ground. In the Meiji period (1868-1912), Kofuji Bunjiro, the founder of Japanese geology, discovered crystalline schist in the area around the Sanba River and named it Sanbagawa crystalline schist, from which the name “the Sanbagawa metamorphic complex” derived later.
With yellow and white stripes on the green stone surface, Sanbagawa crystalline schist, or popularly called Sanba Stone, creates mysterious and wonderful scenery in each season.
Cape Gorota is a rocky cape located in Funadomari-mura, Rebun-cho on the Northern part of Rebun Island in Hokkaido. In the Ainu language, it is called “Kamui Kotan (the place where the god lives),” which is usually given to dangerous places along rivers and coasts. The cape located at 176 m above sea level consists of the cliff protruding to the westward. You can command a panoramic view of Todo Island, Lake Kushu, Mt. Rebun and Mt. Rishiri (Rishiri-Fuji). The cape looks like a dinosaur lying along the coast. Walking down the promenade to the south, you will get to Gorota Beach and Teppu Beach farther away. Here at Cape Gorota you will encounter the beautiful sky, sea, flowers and winds and fully enjoy the natural beauty.
Hidaka Ryumon Gorge is a little up the stream from Iwanai Dam located in the downstream of the Saru River, which runs through Hidaka Town in Hokkaido. It is a twisting gorge with sheer cliffs continuing on both sides.
You can enjoy a full view of the gorge if you go down the stream by canoe or boat in summer. In fall it is a superb spot for viewing autumn leaves. You cam enjoy the exquisite landscape of cliffs covered with red and yellow leaves, listening to the babbling sound of the stream and blown in the autumn breeze.
Note, however, that you must be careful not to lose sense of time. It is said that the day at this gorge is shorter than any other place in Hidaka Town, for the glow of the sunset is blocked out by the sheer cliffs. As is said in a proverb, autumn sun is fast-sinking anyway, but be sure not to be too much fascinated by the wonderful landscapes.