Dreaming of an ocean getaway? Rather than hop on a ferry or spread out the beach towel, dive into the world's most pristine waters while helping to support conservation efforts. Biosphere Expeditions (biosphere-expeditions.org) is one of the pioneering organizations behind this philosophy. Since 1999, the nonprofit has joined "vol-untourists" with scientists working in remote areas around the globe to take on critical conservation issues.
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