由于近年渤海区的鱼类资源逐渐减少,人们开始重视对贝类资源的采捕,锁链耙拉网就是根据玉螺(当地称海脐)的生物学特性研究制作的专项贝类捕捞渔具。它具有制作简单、成本低、收益较高、不损害亲鱼、亲蟹并保护幼鱼资源等优点,因此,深受渔民欢迎,很有发展潜力。 Due to the gradual reduction of fish resources in the Bohai Sea region in recent years, people have begun to attach importance to the collection and collection of shellfish resources. The chain pulling and dragging is a special shellfish fishing gear researched and produced according to the biological characteristics of jade snail. It has the advantages of simple production, low cost and high income, does not harm the broodstock, crabs and protect larval resources, etc. Therefore, it is welcomed by fishermen and has great potential for development.