Fish oil may reduce those levels by 20 to 50 percent ... mothers should avoid eating fish that is high in mercury, such as shark, swordfish, and tuna, and should eat only up to 12 ounces of ...

In the past, people thought the fish were basking in the sun ... During the 20th century, basking sharks were widely fished for their liver oil—used in lamps, cosmetics, perfumes, and lubricants ...

Whale sharks are drawn to natural underwater features such as seamounts and canyons as well as artificial features like ...