oh, the only reason its so long most likely because bergmans law, being the colder the temperature, the larger a creature will get,.

about 150ft, its only about as thick as a broomstick.

These are not jellyfish, or fish. Mainly known as the Giant Siphonophore, (the silly string looking one) the Potuguese Man O War is a Siphonophore as well, the most interesting one in my opinion, is also the most terrifying, i couldnt find the name but its stingers (i think stingers) are at its face and then it just once again starts to look like silly string.