PROBLEM TO BE SOLVED: To provide a raft for seaweed bed capable of constructing a rich fishing place by reclaiming a seaweed bed resembling a shallow seashore.SOLUTION: The raft for seaweed bed includes: a walkable corridor 2 made of timbers or bamboos such as thinned bamboo materials, logs or wooden plates; beneath the corridor 2, at least one or more seaweed bed-forming layer 4 made by horizontally laying at appropriate intervals a plurality of such timbers or half-split bamboos with the split surfaces turned upward; and lighting openings 3 formed by gradually reducing their areas from the corridor 2 to the seaweed bed-forming layer 4 as the lowermost layer. In this raft for seaweed bed, such an enclosure 5 that a plurality of timbers or bamboos such as thinned bamboo materials, logs or wooden plates are laid horizontally or vertically at appropriate intervals may be set on the flank of the raft 1.【課題】遠浅の海岸に似た藻場を再生し豊かな漁場を構築することのできる藻場筏を提供する。【解決手段】最上部に間伐材や丸太や板等の木材または竹材で形成された歩行可能な回廊部2を有し、回廊部2の下方に間伐材や丸太や板等の木材または半分に割って割面を上にした割竹材を複数適当な間隔を空けて水平方向に配した少なくとも一層以上の藻場形成層4を有し、回廊部2から最下層の藻場形成層4にいたるまで段々面積を縮小して形成された採光開口部3を有していることを特徴とする。藻場筏1の側面に間伐材や丸太や板等の木材または割竹材等の竹材を複数適当な間隔を空けて水平方向または垂直方向に配した囲い5を設けることもできる。【選択図】図1