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Clavelina coerulea has a larger number of individuals in each colony, and the tunic is quite translucent. Source: Nishikawa & Tokioka (1976)
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This an adult Molgula pugetiensis collected near the San Juan Islands, Washington, U.S.A.
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This is the tailless larva of Molgula pugetiensis, hatching from the chorion
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FIGURE 3. Morphological variability of Pyura herdmani in South Africa. A. Specimen with large pointed papillae on the tunic, wreck of the SS Clan Stuart, False Bay, 6.8 m depth. Photograph: Matthew Melidonis; B. Individuals attached to sandy bottom at 1.5 m depth under a jetty in the West Coast National Park, Langebaan Lagoon; C. Large pedunculated aggregate characteristic of the individuals living on sandy bottoms, Langebaan Lagoon; D. Specimen found on the underside of a jetty in a marina in the Knysna lagoon; E. Specimen collected from the undersides of a jetty in Langebaan Lagoon; and F. Underwater view of a large aggregate underneath a jetty in the West Coast National Park, Langebaan Lagoon. Scale bars: A. 10 mm; C. 50 mm; D. 10 mm; E. 50 mm.
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Spicules of small size, around 30 mm across (size-range: 13 to 33 mm), densely packed throughout the test, tetrahedral in shape, formed by four rounded calcareous masses.
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solitary
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Fritillaria ragusina from the Adriatic Sea