In time, it helps to create one of nature’s most spectacular ecosystems: a coral reef. Orange, blue, and sparkling-silver fish dart around a seascape of vibrant greens, yellows, pinks ...

The huge monster-sized animal, measuring over 100 feet across, isn't a fish or even a marine mammal like a whale. It's a ...

Among the myriad creatures that populate our ocean, some stand out as having an outsized impact on the marine environment—shaping and maintaining habitats that themselves sustain countless other forms ...

National Geographic scientists recently discovered the world's largest coral colony in the southwest Pacific Ocean, deemed the "mega" coral. The National Geographic Society's Pristine Seas team ...

It was spotted by a National Geographic team embarking on a scientific ... These are called coral reefs. Coral reefs offer both food and protection for various marine animals.