?翼头鲨
路氏双髻鲨(scalloped hammerhead shark)的脑袋相对较宽，它们的两眼交叠范围达到32度。翼头鲨( winghead shark)的视野重叠度数达到48度，麦克库姆形容这种鲨鱼是一种「游泳的飞镖，因为它的脑袋的宽度几乎是体长的一半。
However, the eyes of a winghead shark (Eusphyra blochii), which Dr McComb describes as a 'swimming boomerang' because its head width is almost half its body length, overlap by 48 degrees.
BBC: Earth News - Hammerhead shark mystery solved
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