Located 600 miles west of Ecuador, the islands are surrounded by deep ocean water plunging to 3,000m.
Galpagos is the meeting point of two major ocean currents: the cold Peru or Humboldt current running from Antartica to the south and the California, a warm current coming from the north along the west coast of North America. They meet in Galapagos and one of the major upwellings in the world brings an amazing array of marine life.
The northern islands of Darwin and Wolf, which are uninhabited and only accessible by liveaboard, are the diving 'hotspots' and here the temperature varies between about 20-25C. This is the place to see the schooling hammerheads, Galapagos sharks and at certain times of year whalesharks - October and November are considered to be the best months to spot these magnificent creatures. On our 2007 trip we had ten sightings in two days and some of them were about 12metres long.