根据1990年春季至1991年冬季采自南日岛海域浮游动物样本，初步鉴定出98种浮游动物和12类浮游幼虫。
The samples, which were collected in Nanri Islands sea area from spring, 1990 to winter, 1991, were studied. 98 species of zooplankton and 12 groups of planktonic larvae were identified.
浮到现象是冬天的气温下降并且海水温度高的一天常可看的海洋现象。远方的岛或者船是离水平线显得浮游的。十月末，忽冷的一天，这现象是在淡路岛能看到的。
Floating island phenomenon is a phenomenon of the sea often seen on a day in winter when the air's temperature lower in comparison with the seawater's.
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