Jiaozhou Wan is situtated on the south side of the Shangdong peninsula, There are more than ten rivers entering the bay and large quantities of organic matters are brought by them into the littoral zone.Many marine invertebretes and algae live in the bay and its littoral zone.The area of Jiaozhou Wan is 423M2,the area of littoral zone is about 1/4 of the area of Jiaozhou Wan,and most is sand-mud and mud beach.The Congkou littoral zone is typical sand-mud beach of Jiaozhou Wan.We have colleted 141 species in...