Body egg shaped, semi-translucent. Firm, slightly bumpy surface;
May reach 5 cm in length;
Color grayish with pinkish hue;
Solitary but can develop dense aggregations.
DFO R. Bernier
Sea grapes, sea potatoes and sea peaches are native solitary tunicates, but they are shaped differently and may be found individually or in small clumps. For example, sea grapes are spherical with two siphons close together at the top.
Among invasive species, European sea squirts may be mistaken for vase or clubbed tunicates but their shape, tunic surface and color are different. In addition, the European sea squirt has one siphon on top and one on the side (at approximately one third of its body length).