It doesn't have eight arms, but it does have two helicopters and two submarines.
At 414 feet long, this Octopus is the world's ninth largest yacht.
It belongs to Microsoft co-founder Paul Allen -- it's docked at Treasure Island, and it's not even Allen's only mega-yacht.
He's got another called the 'Tatoosh,' which is also among the world's 100 largest yachts.
