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But in actual fact but some of the records that we've been looking at we see tremendous changes in a matter of decades and so when climate change is the Expedition leader we're trying to get a window into what the past was like The Living Past the geologic past and you can jump into a blue hole and make finds the change our picture of these Island they'll do that by exploring 7 blue holes in just 3 weeks on the islands of endress and Abaco the team has come here