Quick Take Platypuses are monotremes, one of the oldest branches of mammals, and they reproduce by laying eggs instead of giving birth to live young. Unlike most mammals, platypuses secrete milk ...

When most of us picture the ocean, we imagine turquoise waves, colorful reefs, and shoals of darting fish. But that’s only the surface. Venture deeper, far below the last reach of sunlight, and you ...

Animals face a constant battle to survive, not just by finding food but by avoiding becoming food themselves. Over millions of years, evolution has produced a vast range of defense strategies, from ...

Scientists have uncovered the genetic underpinnings of one of the ocean's most bizarre animals: a branching marine worm named Ramisyllis kingghidorahi that lives inside sea sponges and reproduces in a ...

By drawing water into an internal, muscular cavity and forcefully expelling it through a flexible, narrow tube, known as a siphon, cephalopods are able to create forward thrust, propelling themselves ...