well the reason cryogenics doesnt work is that ice crystals are jagged little buggers and when a body beging to freeze it lowers to sed freezing temperature and then ice crystals form. when an ice crystal forms it takes a crystaline shape (which we understand has jagged shards) as the ice and moisture collect into pockets the crystals grow and the flesh is pushed aside. soon the flesh is torn asunder. that is why frostbite can make you have to amputate, because the flesh is dead and it could start to rot. youve heard of freezer burn right?
if you really really still want to go with the cryogenic freezing idea we can go down this road.
currently there is one type of fish (in iceland??) that is the size of a quarter in length. it produces an oil naturally that prevents ice crystals from forming. it is coated in this secretin and can sucessfully be frozen and unfrozen as many times as you want and as long as you want (within the lifespan of a fish). this is an "induced hybernation" as opposed to cryogenic freezing. this would mean that they could preserve the animals fora little while in ice but what would the point be. we dont use the oil for much because of how little you could get. one quart would take a couple thousand fish and who would harvest them all. currently there are not other types of fish that can be "adapted" to secrete this oil. ice would be a be a way to preserve the dead flesh but live animals is a much more painstaking task. and water is cheaper than formaldahyde i believe.
just my thoughts
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