The marine biologists thought it was an old typewriter. Micro biologists and molecular biologists get annoyed at being lumped together with marine biologists, whose only qualification is looking good in woollen sweaters.
Apparently they had different Enigmas on u-boats, so this was thrown off a warship. I'm not sure why they'd dump them when the war had ended, I guess it was like clearing your browsing history while having a heart attack.
[Speaking of heart attacks, here is my recipe for Cullen skink soap. It's this recipe, then you double the double cream and add a cup of Islay malt]