Two new species of deep-sea sponges from the Weddell Sea are described. Both are new to science: a carnivorous Demospongiae species Abyssocladia antarctica sp. nov. and a Hexactinellida species Caulophacus leonieae sp. nov., the latter characterized by a new type of microscleres. Both were sampled at the former Larsen Ice Shelf region, Antarctic Peninsula, that was covered by ice until recent breakup events started in 1995. Abyssocladia Lévi, 1964 and Caulophacus Schulze, 1886 are well-known genera in the deep sea but were discovered here at only 200–300 m depths. The findings support the hypothesis that deep-sea and sub-shelf environments provide similar life conditions. These discoveries should urge us to further investigate areas of disintegrated Antarctic shelf ice as soon as possible, since new trophic conditions may have a severe impact on biodiversity and faunal composition.

描述了来自韦德尔海的两种新的深海海绵。两者都是科学新手：一种食肉的鸡毛种类Abyssocladia antarctica sp。十一月 和Hexactinellida物种Caulophacus leonieae sp.。十一月，后者的特点是新型微晶。二者均在前者拉森冰架地区，南极半岛，这是覆盖冰，直到1995年开始近分手事件采样Abyssocladia列维，1964年和Caulophacus1886年的舒尔茨（Schulze）是深海中的著名属，但在这里仅发现200-300 m的深度。这些发现支持了这样的假设，即深海和副架子环境提供了相似的生活条件。这些发现应敦促我们尽快进一步调查南极大陆架解体的地区，因为新的营养条件可能会对生物多样性和动物组成造成严重影响。