Ключевые слова: animal, biology, black, bright, budding, cell, cellular, cnidaria, colorful, drawing, eumetazoa, freshwater, green, hydra, hydridae, hydroid, hydrozoa, invertebrate, macro, magnification, micro, microbiology, microorganism, microscope, microscopic, microscopical, microscopy, multicellular, museum, organism, permanent slide plate, plate, pond, predator, regeneration, reproduce, reproduction, saturated, saturation, science, slide, slide plate, small, tentacles, tiny, water, white, wildlife,