Lazing on the beach with the sun warming your skin, a piña colada cooling your hand, and a good book holding your attention is all very well. But for some, this kind of beach life can get pretty ...

It's leopard shark season in San Diego, which means it's time to grab some snorkel gear and dive in. The big picture: ...

Snorkeling is straightforward once you get used to it. You swim at the surface of the water wearing a mask that helps you see below, with an attached tube that allows you to breathe the air above.