The Greenland shark lives in ... shark being blind. The parasitic copepod ommatokoita elongata attaches itself to the cornea of these sharks and actually feeds off the eye!

There are Greenland sharks older than the United ... the majority of the population live most of their lives with parasites ...

Measuring the Greenland shark’s growth rate is challenging because individuals are rarely recaptured. However, one shark tagged in 1936 had only grown 2.3 inches when it reappeared 16 years later.