No common name

Corella parallelogramma

ORDER Enterogona

FAMILY Corellidae

TAXONOMY

Ascidia parallelogramma Mueller, 1776, Oslo Fjord, Norway.

OTHER COMMON NAMES None known.

PHYSICAL CHARACTERISTICS

Solitary species. Body reaches 2 in (5 cm) in height and is nearly rectangular in outline and attached by the posterior end. Test transparent and colorless; internal organs clearly seen through it. Red lines, making a characteristic pattern on living specimens, are body muscles; they are better developed on the left side of the body.

DISTRIBUTION

Norway, Sweden, North Sea, United Kingdom, and Mediterranean Sea.

HABITAT

On hard substratum (shells, stones, and algae) at depths from 0 to about 656 ft (0-200 m).

BEHAVIOR

Sessile, attached, immobile species.

FEEDING ECOLOGY AND DIET

Filter feeder.

REPRODUCTIVE BIOLOGY

Larvae are not incubated in atrial cavity.

CONSERVATION STATUS

Not listed by the IUCN.

SIGNIFICANCE TO HUMANS None known. ♦

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