@article{oai:ir.kagoshima-u.ac.jp:00005183, author = {KANIE, Yasumitsu and HATTORI, Mutsuo}, journal = {南方海域調査研究報告=Occasional Papers}, month = {2016-10-28}, note = {Three specimens of living Nautilus pompilius were pressure-tested. They imploded under the pressures approximately corresponding to the depths of 785, 827 and 830m in seawater through the increasing pressure experiments under different compression rates. The depths mentioned above can be assigned the depth limit of this species. Shell deformation generated on the two dead specimens of N.pompilius through the pressure test were measured by strain gauges. The last septum shows the greatest tensile deformation of 1432×10^<-6> and the flank gives compressional deformation of 379 to 754×10^<-6> at the implosion pressure of 567m. The value of the safety factor of N.pompilius from Tañon Strait, the Philippines shows 1.6 and the lowest value of this factor is presumed to be 1.4. The living depth distribution of Nautilus species may not exceed 600m.}, pages = {30--35}, title = {Shell Implosion Depth of Living Nautilus}, volume = {1}, year = {} }