Above, the Medusa-like arms of a northern basket star (right) seek a meal of zooplankton beside a polar alcyonarian soft coral in the shallows beneath an ice sheet in the Canadian Arctic.

极圈的一层薄冰之下，一种两极生活的低级腔肠物软珊瑚类，被那一组令人恐怖的像蛇发女怪的肢极地域寻找软珊瑚做为一顿美餐。