For those with the monetary means coupled with an endless sense of adventure, the C-Explorer 5($2,500,000+) by U-Boat Worx offers a way to take your sea adventures under water. It features a 360-degree transparent pressure hull, can reach speeds of up to 3 knots, and is submersible up to 300 meters. Air conditioning is also available on the C-Explorer 5, which makes sense considering the multi-million dollar price tag.
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