Ключевые слова: aquatic habitat, biological specimen, branched colony, branching pattern, budding structure, cnidaria, cnidocyte cell, coelenterata, colonial form, compound microscope, eudendrium, feeding polyp, feeding tentacles, female, female organ, fixed sample, gastrovascular cavity, gonophores, high magnification, hydranth head, hydroid, hydrozoa, laboratory study, marine biology, marine ecosystem, marine hydroid, marine invertebrate, marine organism, medusoid form, microscope image, microscopic view, organism classification, perisarc, polyp, reproductive bud, reproductive polyp, reproductive unit, reproductive zooid, sea organism, sexual reproduction, stained slide, stained tissue, stolon, transparent tissue, zooid body, zoology research,