Take a day trip from Dahab to two popular snorkeling spots outside the city, the Canyon and the Blue Hole. Take a short Jeep ride to the Canyon, a sandy lagoon that is the result of a crack in a huge coral garden. Popular with scuba divers, the Canyon is actually an extensive underground cave system that only extended range divers can fully explore. Next, head to the Blue Hole, a 328-feet (100 meters) deep sinkhole teeming with marine life. Have lunch in the surrounding restaurants, hike into the mountains, or just relax and take in the views.