Watch for a parade of mega-yachts stopping in Seattle as they come down from Alaska and get ready to head south for the winter.
Among them already: the 204-foot Sea Owl; the 200-foot Avanti, the 163-foot Septimus ; and the 130-foot Antares.
Sea Owl is owned by Robert Mercer, 70, from New York, known as a family man and computer scientist who is co-CEO of Renaissance Technologies. Mercer is one of the top-earning hedge fund managers, according to according to Forbes.
His ultra-luxe yacht is worth…