Efforts to get an orangutan to quit smoking, new species of frog named after Prince Charles, Floridians protest release of genetically-modified mosquito, fruit flies learn arithmetic, and yet another feathered-dinosaur find.

A practical guide to billfish, a group of predatory fish that includes marlin, swordfish, sailfish and spearfish that are best known for their prominent bills.

Rick Rosenthal has a face-to-face encounter with a baby sailfish that emerges from the darkness. Watch the video.

This video segment focuses on the annual “salmon run,” when brown bears descend on Alaska’s rivers to fish.

This video from NATURE examines Cuba's coral reefs, including the variety of corals, fish and other wildlife in the country’s tropical waters. The video also explores why Cuba’s reefs are so healthy in comparison with those elsewhere in the world.

Death Valley may seem an unlikely habitat for a fish, but the Devil's Hole pupfish has managed to thrive here for thousands of years.

(Airs Sunday, August 29) Marine biologist Rick Rosenthal set out to capture on film the biggest, fastest, most dangerous gamefish in the sea -- the ancient creatures known as billfish.

When Hurricane Katrina struck New Orleans, more than 250,000 pets were left stranded by the storm's destruction.