9:30am moderate 3 hrs Beverages
Technically, nature can’t deliver a sure-thing when it comes to animal encounters, but Isla Mujeres, found 9 miles offshore of Cancun, Mexico, is as good as it gets. June through August, the turquoise waters are thick with the spawn of bonito tuna — becoming a buffet for whale sharks, the world’s largest fish at up to 41½ feet long. Local tour operators can drop you in the path of these fish, allowing encounters that can sometimes last up to 20 minutes. This area is also home to two underwater statue parks filled with more than 500 life-size sculptures in 12 to 20 feet of water.
Hawaii’s biggest island has everything you could ever want to do and more. But what separates it from the other islands is Volcano National Park. Explore volcanoes, climb through old lava tubes, and watch as new lava oozes into the ocean. Then there are all the waterfalls on the island, too. Big Island has it all. I mean it’s Hawaii — how could you go wrong?!
A common problem with all mechanical clearing mechanisms is their tendency to fail if infrequently used, or if stored for long periods, or through environmental fouling, or owing to lack of maintenance. Many also either slightly increase the flow resistance of the snorkel, or provide a small water trap, which retains a little water in the tube after clearing.
Snorkels come in two orientations: Front-mounted (see Figure 4) and side-mounted (see Figure 5). The first snorkel to be patented in 1938 was front-mounted, worn with the tube over the front of the face and secured with a bracket to the diving mask. Front-mounted snorkels proved popular in European snorkeling until the late 1950s, when side-mounted snorkels came into the ascendancy. Front-mounted snorkels experienced a comeback a decade later as a piece of competitive swimming equipment to be used in pool workouts and in finswimming races, where they outperform side-mounted snorkels in streamlining. Front-mounted snorkels are attached to the head with a special head bracket fitted with straps to be adjusted and buckled around the temples (see Figure 4).