Ommatokoita elongata is a 30 mm (1.2 in) long pinkish-white parasitic copepod, frequently found permanently attached to the corneas of the Greenland shark and Pacific sleeper shark.[1] The parasites cause severe visual impairment, but it is thought that the sharks do not rely on keen eyesight for their survival.[2] It is the only species in the genus Ommatokoita.[3]


  1. ^ R. Aidan Martin (October 4, 1998). "Greenland sharks and parasites". 
  2. ^ George W. Benz, Joanna D. Borucinska, Lloyd F. Lowry & Herbert E. Whiteley (2002). "Ocular lesions associated with attachment of the copepod Ommatokoita elongata (Lernaeopodidae: Siphonostomatoida) to corneas of Pacific sleeper sharks Somniosus pacificus captured off Alaska in Prince William Sound". Journal of Parasitology 88 (3): 474–481. doi:10.1645/0022-3395(2002)088[0474:OLAWAO]2.0.CO;2. 
  3. ^ Geoff Boxshall (2009). T. Chad Walter & Geoff Boxshall, ed. "Ommatokoita Leigh-Sharpe, 1926". World Copepoda database. World Register of Marine Species. Retrieved March 8, 2010. 
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