Haliactis arctica is a poorly known species of sea anemone of the family Halcampactinidae known only from the Arctic. So far, there have been no reports of it after the original description, based on a few specimens from Greenland, Spitsbergen, the Barents Sea, Novaya Zemlya and the Chukchi Sea. The rich collection of the Zoological Institute RAS, which includes more than 100 specimens, has allowed a detailed morpho-anatomical study of this sea anemone. Examination of the external and internal morphology of H. arctica indicates a noticeable variability of structural features, especially the retractor muscles, parietal muscles and acontia. Comparison of characters between H. arctica with the other representatives of Halcampactinidae shows significant differences in the organization of these anemones. Their morphological differences and also significant geographic remoteness suggest that they should be attributed to different families, however, at present it is impossible to conduct thorough molecular genetic studies that can confirm or refute this assumption.

中文翻译：

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北极海葵 Haliactis arctica Carlgren 的形态描述，1921 年和 Halcampactinidae Carlgren 的分类地位，1921 年和 Haliactinidae Carlgren，1921 年

北极花是一种鲜为人知的海葵科海葵，仅来自北极。到目前为止，根据格陵兰岛、斯匹次卑尔根岛、巴伦支海、新地岛和楚科奇海的一些标本，在最初的描述之后，还没有关于它的报道。动物学研究所 RAS 的丰富藏品包括 100 多个标本，允许对这种海葵进行详细的形态解剖学研究。外观和内部形态的检查H. 北极表明结构特征的显着变化，尤其是牵开肌、顶叶肌和内脏肌。字符之间的比较H. 北极与 Halcampactinidae 的其他代表在这些海葵的组织中显示出显着差异。它们的形态差异和显着的地理偏远表明它们应该归属于不同的家族，然而，目前还不可能进行彻底的分子遗传学研究来证实或反驳这一假设。