Quantitative statistics and behavioral observation of spotted seal(Phoca largha)were conducted through visual and photo observation in the waters around Shixian Island in Jinzhou Bay from March to May in 2011 and 2012.Results showed that more spotted seals were observed in late March in 2011 than in the other days,with the maximal number of 247 on 22 nd of March,then decline in the following days until mid-April and early May.Peak population number of 221 was found in 29 March,2012,with decrease in populati...