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Join marine biologist Alex Kattan during his research onboard DonQuesto in the deep southern waters of the sudanese Red Sea - where reefs are regarded to be the local benchmark for healthy coral reef environment. See how Alex counts tropical fish and explores pristine reefs in order to evaluate Sudan´s extraordinary underwater world - where fishing and diving is not as common as in other places of the Red Sea, unlike many memorable encounters with amazing sea creatures. camera, editing: Marcel Steuermann
