A scuba diver glided underwater alongside a giant sea turtle. Footage shows the nature explorer wearing a suit with an oxygen tank following the marine mammal as it swam over coral reefs. The pair ...

Since the 1960s, saturation diving has enabled humans to build underwater pipelines and structures. Workers spend weeks under immense pressure, separated from death by just inches of rubber or steel.

It's no fun losing a valuable piece of dive gear to the depths, but all that is lost might one day be found—if you know how ...