Board Thread:Monster Discussions/@comment-27637441-20160203004456/@comment-25285745-20160203013922

No, he didn't. At least not in the Japanese version, and I don't remember hearing it in the dub. All Yamane says is that Godzilla inhabited an underwater ecosystem, which was destroyed by the h-bomb, causing Godzilla to come to the surface. The only remnants of his ecosystem are radioactive sand deposits containing strontium-90 that were found in Godzilla's footprint.