the bio weapon known as nightmare i have read the tread about nightmare being a sargosso so i took a look at it and came to a strange conclusion since it being bioweapon and a sargasso i found that it was a sargasso but it could not look ike that normally it would have to be some sort of mutated creature but maybe it is a mutated sargasso with the help of bio engennering so in conclusion its a bio inhanced sargasso known as night mare