Hydromedusa

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Hydromedusa

Hydromedusa. Medusa stage of a Halitholus sp. hydrozoan. Hydromedusae are the sexually reproductive stage of hydrozoan cnidarians. Hydrozoa live in large single-sex (dioecious) colonies made up of thousands of individual specialised polyps. Reproductive polyps bud-off asexually produced medusae. When mature, the medusae release gametes (sex cells) freely into the ocean. Gametes of opposite sexes, from different colonies, then combine to form free-swimming larval zygotes, that either settle on a suitable substrate, or swim and develop into another medusae or polyp directly. Photographed in the White Sea, Russia

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6325351

© ALEXANDER SEMENOV/SCIENCE PHOTO LIBRARY

Barents Sea Cnidarian Colonial Dioecious Hydrozoa Hydrozoan Jelly Fish Medusa Plankton Planktonic Re Production Russia Tentacle Tentacled Tentacles White Sea Zooplankton

EDITORS COMMENTS
This print captures the mesmerizing beauty of a Hydromedusa, specifically the medusa stage of a Halitholus sp. hydrozoan. Found in the White Sea, Russia, these fascinating creatures are part of the sexually reproductive stage of hydrozoan cnidarians. Hydrozoa live in large single-sex colonies comprised of thousands of specialized polyps. Reproductive polyps bud-off asexually produced medusae, which eventually release gametes freely into the ocean when mature. The gametes from different colonies combine to form free-swimming larval zygotes that can either settle on a suitable substrate or develop into another medusae or polyp directly. The intricate tentacles and ethereal appearance make this hydromedusa resemble an otherworldly creature gracefully floating through its aquatic habitat. As part of marine biology and zoological research, this photograph provides valuable insights into the reproductive behaviors and colonial structures within Hydrozoa. With its vibrant colors and delicate features, this image showcases nature's incredible diversity beneath the waves. It serves as a reminder that even in remote corners like the White Sea, life thrives with remarkable adaptations for survival. Science Photo Library has once again captured an extraordinary moment in time with their unparalleled expertise in wildlife photography. This stunning print is not only visually striking but also offers invaluable scientific knowledge about these enigmatic creatures known as hydromedusae.

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