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.
If your looking to step aboard something that is more modern, try Catamaran Reef Snorkel. On this tour, you get to sail on a luxurious 68 foot sailing catamaran, and get to explore the living coral reef’s ecosystem in style. If you are looking for a shorter snorkeling trip, this is the one for you, lasting only three and a half hours, and providing a full hour of snorkeling and the rest of it traveling by wind power.
Beyond this, it is important to remember that the aquatic sights are pretty similar across all of the Galapagos snorkeling sites. Some of the snorkeling sites can be explored on land tours, while others can only be explored on half or full-day yacht tours. There isn’t a single itinerary that can include every single snorkeling site in the Galapagos– there are in fact many hundreds of options – nor is there a definitive list of the top ten snorkeling spots in the Galapagos. In a nutshell: there are nearly a hundred magnificent sites where you could snorkel!

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So with all this tropical inspiration – what do you think of the top 10 tropical islands in the South Pacific? Do you have your own secret islands to share? Just remember: touching down on a South Pacific island is a fantasy that lives in the hearts and minds of so many island lovers around the world. Only you can turn your fantasies into realities! Anything is possible, and if you need any help in planning – just let me know!
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