Cushion starfish is a catch-all term for a variety of starfish species. They are distinctive for their rounded bodies and short arms. The round shape is built on a calcium-rich structure that defends ...

One starfish species doesn't seem to want to grow up. Scientists have discovered a disc-shaped animal in the deep Pacific Ocean whose body plan is stuck in the juvenile phase of the life cycle.

Add Yahoo as a preferred source to see more of our stories on Google. Square-shaped starfish are usually cushion starfish, whose rounded, inflated bodies can appear angular in rare cases. Unusual ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.

A close examination of a collection of starfish in the Smithsonian revealed even more starfish inside those starfish. By Darren Incorvaia Christopher Mah, a biologist at the Smithsonian, was scouring ...

Starfish are classed as echinoderms, a word which comes from the Ancient Greek for “hedgehog skin.” There are many types of starfish and this one is particularly adapted to living in sandy, muddy ...

Researchers have revealed the evolutionary history of the crown-of-thorns starfish -- a predator of coral that can devastate coral reefs. Their findings shed light on how the populations of these ...

With a large variety of starfish in the ocean, there are many unique appearances that can be surprising. One example is the cushion starfish. These marine animals are famous for their inflated bodies ...