Check this out—starfish? They're basically heads that can crawl! Oh, and speaking of cool animal facts, ever heard howler monkeys? They're so loud, you can hear them from three miles away! And get ...

Starfish are known for their adorable and symmetrical arms that seem to hug everything they touch. But it turns out that they may not be hugs after all – because starfish, researchers found, are ...

The vast majority of animals are bilaterally symmetrical, or bilaterian, meaning a single line can divide their body into two identical halves. But starfish—as well as sand dollars and sea ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The heads of most ...

this uniquely puffy starfish is found in shallow waters on coral reefs and rubble slopes, always tropical, where it feeds on algae, coral polyps, and dead animals. It prefers an above-average ...

Despite appearances, however, sea stars actually have more genetically in common with animals such as humans than meets the eye, as Stanford News reported. Mapping a starfish's genetic code ...

Scientists trying to work out where a starfish’s head is have come to a startling conclusion: it is effectively the whole animal. As well as solving this longstanding mystery, the finding will ...

Deep in the underwater world, animals like starfish use unusual ways to escape predators. In an act called autotomy, starfish shed one or more of their limbs to flee their hunters. The severed, ...

While examining the neurohormone in the lab, they observed that it actually triggered autonomy in some starfish, but not all. “In some animals just one arm was lost, but in a couple of animals ...