Subphylum Urochordata (Sea Squirts, Tunicates, Salps)
Approximate Number of Species: 3,000
Largest: The largest species is the colonial salp Pyrosoma sp with a length of 65.6 feet (20 meters).
- A 2.1 meter colony was accidentally caught by British researchers on sampling gear.
- A photograph of Pyrosoma spinosum with a diver in the Philippines.
Smallest: The tunicate Minipera pedunculata reaches lengths of only 0.02 inches (0.5 mm)
Brusca RC & Brusca GJ (2003) Invertebrates (Sinauer Associates, Inc., Publishers, Sunderland, MA) 2nd Ed.
S. Haddock and B. Robison, personal communication
Monnoit C & Monniot F (1978) Recent work on the deep-sea tunicates. Oceanography and Marine Biology Annual Review 16:181-228.