A seashell may look like a beautiful, hollow treasure, but to a certain sea creature it was once more than that. Seashells are the exoskeletons of mollusks such as .\r<br>\r<br>A sea shell is a hard, protective outer layer created by an animal that lives in the sea. The shell is part of the body of the animal. Empty seashells are often found .\r<br>\r<br>Thank you to James Cook University - And to the following Subbable supporters, who also help make MinuteEarth possible: .\r<br>\r<br>If you study snails, youve got to be patient. But two UCMP graduate students, Jann Vendetti and Scott Fay, used time-lapse photography to kick slow snails into .
