Solitary zooids: up to 137 mm long (Salpa maxima). Test entirely smooth. All the body muscles dorsally parallel. Dorsal tubercle resembling a large and elaborate letter G.
Aggregate zooids: up to 150 mm long, excluding projections (Salpa maxima 1). Test entirely smooth. MI to MII and MIII to MIV fused dorsally; MII and MIII meeting in the mid-dorsalregion. MIV and MV converging but not fused laterally.
Kingdom Animalia Phylum Chordata Subphylum Urochordata Class Thaliacea Order Salpida Family Salpidae Subfamily Cyclosalpinae Genus Salpa Species Salpa maxima