Snorkels constitute respiratory dead space. When the user takes in a fresh breath, some of the previously exhaled air which remains in the snorkel is inhaled again, reducing the amount of fresh air in the inhaled volume, and increasing the risk of a buildup of carbon dioxide in the blood, which can result in hypercapnia. The greater the volume of the tube, and the smaller the tidal volume of breathing, the more this problem is exacerbated. A smaller diameter tube reduces the dead volume, but also increases resistance to airflow and so increases the work of breathing. Occasional exhalation through the nose while snorkeling will slightly reduce the buildup of carbon dioxide, and may help in keeping the mask clear of water. It may also increase fogging.
Many people don’t get the chance in their lifetime to encounter dolphins in the wild. By boarding "Shumba," or another of our many personalized Wild Dolphin Encounter and Snorkel boats in Key West, you not only get a unique view of the ocean from under an extended bimini top, you also get the chance to encounter the wild dolphins up close and see how these happy mammals play and interact with each other, and with you! Along with a clean vessel and an energetic crew, this will make for lasting memories and stories to share for years to come.
At Lulus, we know how important it is to look stylish everywhere you go--and that includes the beach! Whether you're taking a dip in a pool, going to a party on the beach, or simply looking forward to relaxing by the water, we have cute bikinis for sale that will help you show off your bod in style. It's easy to find the best bikinis online: Just shop with Lulus and you'll be beach-ready in no time!