Sorberacea are benthic animals and a subgroup of the Tunicata (Urochordata). They superficially resemble sea squirts but prey on invertebrates such as crustaceans. They also have some unique physical features that distinguish them from the ascidiaceans, including a severely reduced pharynx, the retention of the dorsal nerve cord as adults, the superficial position of their ganglion and the unique histology of the cells of their digestive tracts. The branchial syphon is large and surrounded by six large lobes; the cloacal syphon is small.They live exclusively in deep water and range in size from less than one inch (3 mm) to 2.4 inches (6 cm).

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