"An army of shell-crushing crabs is poised to invade parts of the Antarctic Ocean that were off limits to the crustaceans for millions of years because of the intensely cold water.
Scientists believe that, as global...
"They live in the bottom parts of shallow tropical waters. Looking carefully, you are likely to find them lying on a seabed, buried or partially covered with sand. They can move very rapidly when threatened or in pursuit of a passing fish. They also eat mollusks and...