حاضنات

thumb|The claspers of a spotted wobbegong shark (Orectolobus maculatus) thumb|The claspers of a young spinner shark (Carcharhinus brevipinna) thumb|Life restoration of the extinct chimaera Ischyodus, showing the presence of a cephalic clasper on the head of males (as well as a pelvic clasper) but absent in females In biology, a clasper is a male anatomical structure found in some groups of animals, used in mating. thumb|300x300px|A close up view of a chimaera clasper (Hydrolagus collie). Note the many small tooth-like projections covering the exterior surface. thumb|Illustration of Harpagofut