Photo: No known restrictions on publication.1928. Sponge exchange, Tarpon Springs, Fla. http://JohnBatchelorShow.com/contact http://JohnBatchelorShow.com/schedules Parler & Twitter: @BatchelorShow #ClassicScience: Saving 600 million years ago ancestors (sponges) in the emerging market of industrial PRC, 2017. Host. http://english.cas.cn/newsroom/archive/news_archive/nu2017/201704/t20170411_175945.shtml