The sperm whale is the canonical whale, its form immortalized by books and drawings centuries old. When you ask a child to draw a whale, it is likely that what will come out of her developing mind most likely resembles a sperm whale, an animal with a huge, box-like head and tiny pectoral fins whose evolution seems to defy logical explanation

Cozumel combines the great reefs that one might find at the best dive spots around the warm Mexican Gulf waters with the laid back island life, where everything is close enough..

Impressions from Antarctica, photographed by Michael Aw and Göran Ehlmé

Dutch Springs is a quarry in Bethlehem, Pennsylvania. Every weekend hundreds of scuba divers come to train, practice skills or just have fun underwater. The quarry features platforms where divers could practice skills, and has underwater attractions including boats, planes, vehicles and even a helicopter.

Global diving travel has become increasingly easy over the last decade or so, providing easy access to a growing number of tropical and exotic destinations. So, for many divers residing in cooler climates or new to the sport, it is tempting to look only towards these warm distant destinations and perhaps ignore the wealth of marine life on their own doorstep.

" I’d like to introduce you to some of our friends, enthused our guide Manasa, a.k.a Papa, as he held aloft a well-worn loose-leaf binder. The photographs within produced nervous laughter and a couple of anxious glances amongst a few of the divers. Then again, with names like Scarface, Hook and Big Mama, these were no ordinary friends. They were sharks, and we would soon be making their acquaintance. "