It's voluntourism on a cruise ship: Find out how to swim with manta rays and whale sharks in the Maldives aboard the Four Seasons Explorer liveaboard dive boat.

Dreaming of a Marquesas Islands getaway? Dive on the liveaboard *Itemata*, a 60-foot catamaran with exciting excursions and private dives.

Tofu is one of the few places on Earth where you can scuba dive with ocean-going and reef manta rays, and it offers the experience of a lifetime.

It's the underwater encounter of a lifetime: diving with Narwhals in the High Arctic. Read how this photographer befriended these marine mammals.

Solomon Islands Dive Expeditions

Bull sharks may be associated with shark attacks, but they have a bad reputation. In reality, scuba diving with bull sharks can be amazing — especially in Mexico.

Dive this incredible underwater mountain in Tenerife — you'll feel like you're exploring outer space.

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Save Ontario Shipwrecks is a nonprofit that works to preserve the many boats underwater in the Great Lakes, and they need scuba divers to help on this mission!