海渊(hǎi yuān) “an abyss, deep waters”
not found at HD. 5.1230.; DK. 6.1161a(no indications of the source);
105c18.智积菩萨问溥首曰：“所诣海渊化度几何？”(p)
K. 261.7.samudra-madhya- (v.l. samudra-); L. 35a28.龙宫;