Sunlit Zone - Woods Hole Oceanographic Institution

The upper layer of the ocean is known as the sunlit, or euphotic, zone. Because water strongly absorbs light, sunlight penetrates only to depths of about 200 meters (656 feet).

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Student Research - Woods Hole Oceanographic Institution

Ocean Twilight Zone Basics Interactive

Ocean Twilight Zone Basics Interactive

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Woods Hole scientists, author explore 'twilight zone' in book for kids

Enter the strange and wonderful world of the ocean twilight zone

All the Fish We Cannot See

Abyssal Zone Animals, Plants Other Organisms Video Lesson , 44% OFF