This could be an ancient scuba-diving suit

This could be an ancient scuba-diving suit

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Above the text is a strange picture from the medieval period, that portraits the person, who might dress in the diving suit, and is covered with the coagulate like silicone. This bite would help the diver get the extraordinary depth, while diving. The silicone would allow the diver to dive more safety because the bag of coagulate would protect the diver from the water pressure.

The tube or hosepipe, what comes out from the mask might be filled with carbon, what allowed the diver dive more safety and longer period than the snorkel. Of course, that diving suit can be used in the many other things, but there is one very interesting mark in this picture. That is the knight's helmet and the purpose of that sign is tell, that this equipment is very hard stuff, and it was very needful information for soldiers and bodyguards, who saw the man wears this suite.

But the diving equipment could also be used under the knight's armor, and that allowed those men to step in the castles unseen, and then take it under the control by surprise. There are some other explanations about this kind of pictures and in some texts, those strange pictures are claimed to portray the "alien combat suit" what allows the warrior to walk in the enemy territory, and in the back of that person might be the generator, what creates two electromagnetic fields, what are touching in the air, and those magnet fields would break the bullets before they hit the target.

My opinion is, that this picture is about the scuba-diving equipment, what is made by adipose walrus leather. Similar equipment was used in the rescue missions of the Wasa-ship in the 17th. century. This kind of dry diving suit is portrayed in many technical museums. The suits, what are stored in museums are normally equipped with heavier helmets. But there were lighter versions of the suits, what was made by the lighter skin. That suit could protect the sailors during the storms against cold weather. This could be the most reasonable explanation for this picture.