This is the second part of a two-part series about filmmaker Jill Heinerth and her exploration of the Ottawa River caves in ...

“He released a shimmering trail of tiny microbubbles from his plumage, coating himself with a lubricating layer of air to cut drag and maximize speed,” Crosby said. “Perhaps most enchantingly, ...

Michael Patrick O’Neill went from swimming with corporate sharks to real ones. He turned a hobby of underwater photography into an art form where his work earns accolades worldwide and inspires ...

This year's contest, which is organized by the Underwater Photography Guide, broke records with participants from more than 90 countries entering their best underwater photos across 14 categories.

Thomas Peschak (Germany/South Africa) documents the relationship between endangered Amazon river dolphins – also known as botos ... Thomas is a National Geographic Photographer and Explorer. He’s a ...