But still, no matter how long your snorkel, you're not going to average more than a few breaths of fresh air per minute. Will that make a noticeable dent in the

But still, no matter how long your snorkel, you're not going to average more than a few breaths of fresh air per minute. Will that make a noticeable dent in the 8-10 hours of snorkeling you're doing? :)