Fluorescence Digital Image Gallery

Obelia Hydroid: First Generation

The second generation of the Obelia life cycle begins when the medusae are released by the gonozooids and become free-swimming forms. The medusae reproduce sexually, producing eggs and sperm that fertilize to become ciliated larvae (planulae). The planulae remain in a free-swimming form for a period of time, eventually attaching to a surface and developing into polyps.


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