This is a plot from Christopher Clark who tracked one individual blue whale as it passed by Bermuda, went down to the latitude of Miami and came back again.
这幅图来自克里斯托弗.克拉克， 他在一条蓝鲸 经过百慕大时对它进行跟踪， 它游至迈阿密同一纬度时，开始往回游。