中文摘要：

2004年6月山东省威海石岛的渔民偶然误捕了一头须鲸，经作者鉴定，此标本系小鳁鲸（Balaenoptera acutorostrata）。主要鉴别特征：头背面的嵴明显；左右鳍肢各有一白色的横斑；有282对白色的鲸须板。同时还对其进行了较详细的观察和测量，值得一提的是此鲸存有异常现象：有一假脐，乳沟位于生殖裂后端而非生殖裂的两旁。

英文摘要：

One minke whale was caught by bycatch in June, 2004 in Shidao, Weihai. It is a female with body length 4.28 m. Some basic measurements （biological and morphological data）of the minke whale were taken in this paper, and some unusual structures were noted： two navels, one is the false navel, and mammary slits are located in the posterior part of the genital slits.