"The life span of sharks can be determined by keeping them in captivity, by tagging, or, more commonly, by counting gr…"

"we used to think of sharks as bad guys — like the only good shark was a dead shark. And “man-eaters” — they used to t…"

"When the young is completely formed, the yolk remains attached to the belly by a long chord, consisting of blood vess…"

"... While sharks kill an average of four humans a year, humans kill 100 million sharks each year. ... While recreatio…"

"You see, Sykes, it's a fish-eat-fish world, you either take, or you get taken out."

"Why is it that me locks can sting other people but they have no effect on me or you?"

"Dory, that's a jellyfish!"

"Guppies live about two years. Breeders have developed multitudes of fin colors and patterns. Many clubs breed what th…"

"Before a faculty meeting, talking again with the expert on guppy menopause. What do biologists make of the question, …"

"The guppy, Poecilia reticulata, is one of the world's most widely distributed tropical fish. It is found in every con…"