Threat of invasive species prompts Crater Lake National Park officials to temporarily close lake to scuba diving.

Elevated levels of caffeine found at several sites in Pacific Ocean waters off the coast of Oregon

Books & Media |  Beneath Cold Seas by New York based David Hall is a rare piece of art.

A dive trip to the U.S. State of Alaska is a true adventure, both above and below the surface. The rich green waters of the Pacific Northwest are full of life and photographic opportunities. The liveaboard dive boat, Nautilus Swell, is a great way to experience Southeast Alaska.

Pacific Rim Whale Festival Society is celebrating their 26th year at the annual Pacific Rim Whale Festival, March 17-25th, 2012!

Optical Ocean Sales, LLC is proud to announce it has expanded into a retail sales center conveniently located on Lake Union at 1800 Westlake Ave North, Suite 201 in Seattle, thus continuing it's 8 years of service to the diving community.

I often raise a few eyebrows when I exclaim, “I’ll take diving in the Pacific Northwest over anyplace else in the world.” And it’s true.

What wonderfully brilliant red colors one can find in the underwater realm, especially in the Pacific Northwest regions of North America. Why are these marine species so red? How do they get that color? What purpose does it serve? As in many cases in nature, it comes down to simple survival.

Puget Sound • San Juan Islands • Strait of Juan de Fuca • Vancouver Island • Alaska • The waters of the northern Pacific coast of North America are some of the richest in the world in terms of marine life and natural resources due to a continual influx of nutrients brought by currents that circulate in the region. Divers will find both awe-inspiring and challenging experiences to enjoy here.

Two of the resident orca families from Puget sound —L and K pods—have been seen in recent years feeding off the California coast in the winter. That was unheard of before early this decade, leading scientists to speculate they are driven to swim hundreds of miles just to meet their minimum nutritional