With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: The Japanese coastal area of the sea consists of Okujiri Ridge, Sado Ridge, Hakusan Banks, Wakasa Ridge and Oki Ridge. Yamato Ridge is of continental origin and is composed of granite, rhyolite, andesite and basalt. It has an uneven bottom covered with boulders of volcanic rock. Most other areas of the sea are of oceanic origin. Seabed down to is of continental nature and is covered with a mixture of mud, sand, gravel and fragments of rock. The depths between are covered in hemipelagic sediments (i.e., of semi-oceanic origin); these sediments are composed of blue mud rich in organic matter. Pelagic sediments of red mud dominate the deeper regions.
text_B: If you were to scuba dive to the bottom of the sea at Yamato Ridge, would you expect to see fish that are small and nimble, rather than large flat fish such as halibut that sweep over the ocean bottoms?
YES.