The Biber midget submarine was one of the smallest German submarines of World War II. Designed for coastal operations, it was meant to attack enemy ships with torpedoes — quietly, unexpectedly and without the need for large U-boat bases. Reality was far more dangerous: Cramped conditions, limited range and frequent technical problems made missions extremely risky. For the often inexperienced pilots, every deployment could become a one-way mission. Today, the Biber stands as a symbol of the late-

Meet Nemo, the $1 million personal submarine. | Mashable