Yet these behemoths’ most puzzling feature is a whip-like tail that can measure as long as the rest of the fish’s body. Why mantas and related rays have such long tails has long been a mystery.

The best 4K Blu-ray players deliver the ultimate picture quality for watching movies and TV series at home. Although streaming services are popular, Blu-rays deliver video at a higher bitrate ...

Amazon's awesome 3 for $33 4K Blu-ray sale ends tonight, January 20, at 11:59 PM PT. You're effectively paying $11 per movie, which is quite the deal--especially when you check out the eligible films.