The raising device, with the seawater the main tank 10 which accommodates the deep-sea living thing and hot water supply expedient has 20 and hot water discharge expedient 30. As for hot water piping 22, from hot water tank 21 as for the extending being present and the end the gushing hole 22a which makes the hot water the upper part erupt is formed on bottom of main tank 10. Hot water discharge expedient 30 is arranged in the upper part of the gushing hole, 22a which gushes the hot water the hot water which rises from the gushing hole 22a, through hot water exhaust pipe 31, circulates to warm water tank 23 outside main tank 10. The hot water which from the gushing hole 22a is gushed to upward the cold water limits forms 12 and the local hot water limits 11, but these hot water limits the boundary of 11 and the cold water limits 12 is formed in order to stand up suddenly in the upper part in the section of vertical direction of the seawater inside main tank 10.飼育装置は、海水とともに深海生物を収容する主水槽10と、熱水供給手段20と、熱水排出手段30とを備える。熱水配管22は、熱水槽21から主水槽10の底部に延在し、その末端は熱水を上方に噴出させる噴出孔22aを構成する。熱水排出手段30は、熱水を噴出する噴出孔22aの上方に配置され、噴出孔22aから上昇してきた熱水を、熱水排出管31を介して主水槽10外の温水槽23に循環する。噴出孔22aから上方に噴出された熱水は冷水域12と局部的な熱水域11を形成するが、この熱水域11と冷水域12との界面は、主水槽10内の海水の鉛直方向の断面において、上方に急激に立ち上がるように形成される。
