The Mimonectes sphaericus, an amphipod crustacean living upon jellyfish and their kin in both the Arctic and Antarctic, is seen in this undated handout. The large sword-like antennae only occur in males. At least 235 types of cold-loving creatures thrive in both Arctic and Antarctic seas, puzzling scientists about how they got to both ends of the earth, a study showed on Sunday. [Xinhua/Reuters]
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