National Geographic researchers have unveiled the world's largest coral, a stunning structure measuring 111 feet wide and 104 feet long in the Solomon Islands. Discovered during a Pristine Seas expedition, this unique coral made of nearly one billion polyps is believed to have been growing for over 300 years. While this living giant stands as a beacon of hope amid global coral decline, scientists emphasize the threats of climate change. The discovery highlights the ecological importance of the Solomon Islands and the need for its protection against human impacts.