Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. For any animal, releasing sperm cells requires a bit of time and ...

Life is strange in the deep sea. For the male spotted ratfish — a ghostly relative of sharks, also known as the chimaera — it ...

Perrone Jr., Michael. 1978. "Mate size and breeding success in a mongamous cichlid fish." Environmental Biology of Fishes, 3, (2) 193–201.

JAMESTOWN, St. Helena — Whale sharks shouldn’t be hard for scientists to find. They are enormous — they are the biggest fish in the sea and perhaps the biggest fish to have ever lived. They are found ...

Nobody knows where whale sharks are mating. But scientists suspect it may be happening in the waters around St. Helena. It's the only place in the world where adult male and female whale sharks are ...