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Helmet Jellyfish Video Stock Footage

Helmet jellyfish reach a body size of up to 30 cm (12 in). They consist 90% of water, the rest being tissue and gelatinous mass, which give the animals their form. They light themselves from within by means of bioluminescence, the red flashes serving as a signal amongst themselves. Between their marginal lobes sit small sense bulbs, by which the helmet jelly can distinguish between light and dark they have been observed to avoid light. At night the helmet jellyfish leaves the depths and swims up toward its food, plankton. With full stomach it turns from the surface back to the depths. Other deep-sea inhabitants feed upon its faeces.

Learn more about Helmet Jellyfish

Animalia: Cnidaria: Coronatae: Scyphozoa: Periphyllidae: Periphylla periphylla

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