Hydra, SEM
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Hydra, SEM
Hydra budding. Coloured scanning electron micrograph (SEM) of a Hydra sp. freshwater hydrozoan. Hydra catch small swimming crustaceans such as daphnia using stinging and adhesive cells on their tentacles (finger-like, upper centre). Prey is ingested via a mouth (circular, centre) at the base of the tentacles. Magnification: x60, when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9243193
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Cnidaria Cnidarian Cnidarians Coelenterate Coelenterates Colored Freshwater Hydroid Hydroids Hydrozoa Hydrozoan Hydrozoans Mouth Polyp Polyps Tentacle Tentacled Tentacles Cutouts
EDITORS COMMENTS
This print showcases the intricate world of Hydra, a freshwater hydrozoan. The image, captured using a scanning electron microscope (SEM), reveals the mesmerizing process of budding in these fascinating creatures. Colored to highlight their unique features, this SEM provides a glimpse into the life of Hydra. The upper center of the image displays finger-like tentacles adorned with stinging and adhesive cells that enable Hydra to capture small swimming crustaceans like daphnia. These tentacles are essential for their survival as they serve as both weapons and traps. At the base of these tentacles lies a circular mouth through which prey is ingested. This central feature is highlighted in the image, drawing attention to its significance in Hydra's feeding process. With a magnification level of x60 when printed at 10 centimeters wide, this photograph beautifully captures every detail and intricacy present within this single polyp. From its vibrant colors to its delicate structure, it offers an up-close look at one of nature's wonders. Steve Gschmeissner skillfully captured this moment using his expertise in zoology and microscopy. His work allows us to appreciate not only the beauty but also the complexity found within aquatic invertebrates like Hydra.
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