Lindblad Expeditions-National Geographic is throwing in free round-trip air from Miami to Galapagos on select departures between August 20 and December 15 aboard National Geographic Endeavour and National Geographic Islander as well as for their Galapagos + Peru trips.  You must book by April 30.  Lindblad has been sailing the Galapagos since Eric Lindblad led the first non-scientific expedition there in 1967.  They have exclusive naturalists on board, certified photo instructors, Zodiac boats to cruise the shorelines, undersea specialists for snorkel exploration, glass bottom boat and a unique set of tools to explore under the sea (video microscopes, plasma screens, hydrophones, video chroniclers and splash cams).  They also offer a wellness program featuring nature-inspired spa treatments (and a floating massage platform on Endeavour), daily stretching and well-equipped air-conditioned gyms.