<;P>;PROBLEM TO BE SOLVED: To produce a seaweed bed-making technology for permanently protecting marine algae seeds and seedlings for transplantation and grown marine algae from damages of algae-eating fishes and selectively providing an area protected from the damages of the algae-eating fishes as a feed field for algae-eating fishes crawling aquatic lives such as abalone, turban shell, etc. <;P>;SOLUTION: The seaweed bed-making structure is produced by enclosing a seaweed bed-making base 1 with a porous protective cover such as a protective net 4 to arrange a protective space for permanently protecting marine algae in the cover from algae-eating fishes, preventing invasion of algae-eating fishes, arranging an entrance part for allowing crawling aquatic lives such as abalone, turban shell, etc., to enter the inside of the protective cover and providing the inside of the protective cover 4 as a feed field for algae-eating crawling aquatic lives such as abalone 6, turban shell, etc. <;P>;COPYRIGHT: (C)2008,JPO&INPIT