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Sea potato

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Ascidian

Sea potato

Boltenia ovifera (Linnaeus, 1767)

WoRMS AphialID

103815

Sample IDs

Collected

Southern Shore NS, Western Isles NB, SCUBA-hand collection from boulders and bedrock wall, 12-22 m depth.

Distinguishing Features

• Form: oval-reniform with stalk 2-4 times body length. The test is leathery, smooth, wrinkled to spinose and fuzzy when young. It has a yellowish to bright pink-orange-red colouring.
• Siphons: square shaped• Branchial sac: 9-10 folds on each side and transverse stigmata.
• Gut: U-shaped.
• Gonads: 1 on each side, elongated, and lobed. The left gonad is inside the intestinal loop.

Habitat

On rocky seabeds and usually in areas with strong tidal currents, 7-500 m depth. Can be abundant in high current areas forming sea potato 'forests'.

Geographic Range

Arctic and North Atlantic.

Fun Fact

Lots of different animals and seaweeds grow on sea potatoes. Young cod are often found amongst sea potatoes, hiding from their predators. The sea potato’s Latin name ovifera means egg-shaped.

Barcode Distribution

BIN matching Canadian Atlantic.

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