The Collaborative International Dictionary of English v.0.48:
Salp \Salp\ (s[a^]lp), n. (Zool.) Any species of Salpa, or of the family Salpidae. [1913 Webster]WordNet (r) 3.0 (2006):
salp n 1: minute floating marine tunicate having a transparent body with an opening at each end [syn: salp, salpa]