The earliest ancestors of the crocodile evolved around 235 million years ago. These prehistoric predators have an impressive ...

For scuba-diving aficionados and beginners alike, the dive experience is especially ... After even the briefest dip into the water, it quickly becomes clear just how spectacular an underwater ...

Step from side into chest-deep water, move into a front float for 5 seconds, roll to back, float for 5 seconds then return to a vertical position. Move into a back float for 5 seconds, roll to front ...

And if these sharks can't swim, they suffocate. So how these animals manage to dive into water that drops to temperatures of about 40 degrees Fahrenheit (4.4 degrees Celsius) — practically ...