Did you know that 75 percent of our planet is covered by ocean? Did you know that these immense bodies of water that interconnect between the continents rest on gigantic mountain ranges even larger than the Himalayas? And that there are valleys as spectacular as the Grand Canyon below us in this deep blue abyss, home to millions of thriving species we have not yet even discovered?

Earth is the only planet in our solar system with liquid water on its surface. When waters are altered or contaminated, it threatens the survival of ocean creatures that are dependent on their environment.

The images shown here come from the Pacific Ocean's Great Barrier Reef. Go to The Honolulu Advertiser's Web site for footage from Emmy-nominated director and cameraman Ross Isaacs of Ocean Planet Images, who has more than 30 years of experience as an underwater photographer, cinematographer and filmmaker. He lives in Port Douglas in North Queensland, Australia, adjacent to the Great Barrier Reef.

Isaacs specializes in documenting natural history, and he has pioneered the use of closed-circuit rebreathers for this genre of filmmaking, which allow for extended continuous underwater camerawork.

Ocean Planet Images is a world leader in shooting high-definition underwater documentation of marine organisms, from the small to the immense — from the tiny creatures that inhabit and sustain our coral reefs to dolphins, sharks and whales.

The photos and video are provided by Ocean Planet Images and YNR Marketing.