Items such as a coconut or nautilus shell were considered as rare and precious as emeralds , and were mounted in fine metals and sometimes set with gems .
像椰子或鹦鹉螺鲜有人问津,而翡翠则很受欢迎,优质的贵金属和点缀着宝石的也在陈列。
Ancient sharks , giant oil fish , swarms of crustaceans and a primitive shell-dwelling squid species called the nautilus were among the astonishing life captured by remote controlled cameras at osprey reef
David heydon , the boss of nautilus , says that his firm 's underwater samples , which are literally cut and lifted off the sea floor , contain 10 % copper .
鹦鹉螺公司老板大卫海冬说,他们公司开掘并运出海底的水下样品却包含百分之十的铜。
In 2009 the canadian firm nautilus minerals , the leading seafloor-mining company , estimated that there are thousands of sulfide systems under the sea , with the potential to yield " several billion tons of copper " alone each year .