PROBLEM TO BE SOLVED: To provide a seaweed cultivation device with which seaweed S are effectively cultivated through supplying carbon dioxide into seawater, and defects caused when supplying the carbon dioxide are eliminated.SOLUTION: The seaweed cultivation device is provided with a cultivation tank 2 for cultivating the seaweed S, a carbon dioxide supply mechanism supplying carbon dioxide to seawater in the cultivation tank 2, and an electrolytic mechanism 4 where the seawater in the cultivation tank 2 is decomposed by an electric current.COPYRIGHT: (C)2008,JPO&INPIT【課題】海水に二酸化炭素を供給して海藻Sの栽培を効率化させると共に、二酸化炭素を供給した際に生じる不具合を解消することである。【解決手段】海藻Sを栽培するための栽培槽2と、前記栽培槽2内の海水に二酸化炭素を供給する二酸化炭素供給機構3と、前記栽培槽2内の海水を電気分解する電気分解機構4と、を備えている。【選択図】図1
