A pair of scuba divers have captured amazing footage of marine life by leaving their GoPro on the ocean floor unmanned. Brittany Ziegler, 34, and her best friend Bettina Aelley, 38, have been ...

Did you know coral reefs cover less than 0.1% of the ocean but support 25% of marine species? This shows how vital these ecosystems are. Exploring the 10 best island reefs around the world reveals ...