On the Air: June 28, 2015
A snail fish in the Canada Basin at roughly 6000 feet water depth. Credit: Bodil Bluhm, University of Alaska Fairbanks (UAF) and Ian MacDonald, Texas A&M University, Corpus Christi

More than five miles below the surface of the Pacific Ocean, the temperature is near freezing, there’s no sunlight, and the pressure is more than five tons per square inch. Yet that forbidding zone is home to the deepest fish yet seen — a tadpole-shaped creature known as a snailfish.

In Print: July 1, 2015
The spined pygmy shark, which is similar to the smalleye pygmy shark, also uses bioluminescense for camouflage. Credit: National Oceanic and Atmospheric Administration.

Not all sharks are at the top of the food chain; some are small enough to be a potential meal for dozens of other species. Diminutive sharks as small as 8 inches long, such as the smalleye pigmy shark, have evolved characteristics to stay off the menu of predators.