Credit: WIM VAN EGMOND/SCIENCE PHOTO LIBRARY

Caption: Obelia hydrozoan medusa stage. Light microscope footage of the free-swimming medusa stage of Obelia sp., a hydrozoan. Medusae reproduce sexually, producing larvae which attach themselves to solid surfaces and form stalked sessile colonies of polyps. The polyps form new generations of medusae. Magnification: x44 at 10 centimetres wide.

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Keywords: 1, 20 seconds or greater, animal, animals, aquatic, biological, biology, black background, cnidaria, cnidarian, fauna, free-swimming, hydroid, hydrozoa, hydrozoan, invertebrate, life stage, life-cycle, medusa, micro-organism, micro-organisms, microbe, microbes, microbial, microbiological, microbiology, microorganism, microorganisms, microscope, microscopic, microscopy, nature, no-one, nobody, obelia sp, one, plankton, single, swimming, tentacle, tentacled, tentacles, wildlife, zoological, zoology, zooplankton

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Obelia hydrozoan medusa swimming

K005/6039 Rights Managed

Downloadable master

Duration: 00:00:28.07

Frame size: 1920x1080

Frame rate: 29.97

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 629.5M

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Capture format: Unknown

Codec: H.264

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