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Violescent Sea-Whip Video Stock Footage

P. clavata has a branching structure forming a fan-shaped colony in a single plane. The stem and branches are stiffened by gorgonin, a complex protein that produces a horny skeleton. The coenenchyme, a thin living layer of cells, covers the skeleton and the polyps protrude from this, each with eight feeding tentacles surrounding a central mouth. The polyps are up to 10 mm (0.4 in) high and the whole colony up to one m (3 ft) high and 1 m across. The colour is usually red, but may be partly yellow. Each colony is either male or female. Sperm is liberated into the sea by the male colonies and fertilisation occurs on the surface of the female colonies. The embryos are brooded there before being released as planula larvae into the water column. The larvae are photophobic and soon settle on the seabed. Once there, they develop into polyps and start secreting gorgonin to form the skeleton. Further growth of the colony is by budding of new polyps. Some new colonies may be formed from fragments that become detached from existing colonies. P. clavata is a slow-growing species and colonies probably live for well over 50 years. Learn more about Violescent Sea-Whip

View related species in family group: Coral and Sea Whip

Animalia: Cnidaria: Alcyonacea: Anthozoa: Plexauridae: Paramuricea clavata

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