A sea turtle's shell is a masterpiece. A study reveals that marine turtle shells combine flexibility and strength to protect against predators like sharks and stress while optimizing movement. This ...

Most marine animals form their shells from calcium carbonate, which is a tough mineral also found in limestone. Some sponges and microorganisms use another compound silica. There is also a group of ...

Sometimes animated turtles seem to live inside their shells like it’s a tiny home. They may even hop out of the shell and run around. That’s funny in cartoons and games, but my friend Ryan Wagner told ...

Seashells are so plentiful that you may sometimes take them for granted. Scientists have estimated that just one small stretch of beaches along the Gulf of California contained at least 2 trillion ...