Subject: Re: 1,2,3,5,6,7 I.R.S. Commissioners
Sadly, Hákarl is made from the meat of Greenland sharks, which are quite remarkable in their own right:

Greenland sharks have the longest lifespan of any known vertebrate, estimated to be between 250 and 500 years.[4] They are among the largest extant shark species, reaching a maximum confirmed length of 6.4 m (21 ft) long and weighing over 1,000 kg (2,200 lb). They reach sexual maturity at about 150 years of age, and their pups are born alive after an estimated gestation period of 8 to 18 years.[5] The shark is a generalist feeder, consuming a variety of available foods, including carrion.[6]

https://en.wikipedia.org/wiki/...