A major effect of long-term weightlessness involves the loss of bone and muscle mass. Without the effects of gravity, skeletal muscle is no longer required to maintain posture and the muscle groups used in moving around in a weightless environment differ from those required in terrestrial locomotion.
Marina /ma-ri-na/ [3 sylls.] as a girls' name is pronounced mah-REE-nah. It is of Latin origin, and the meaning of Marina is from the sea. From marine. A saint's name. Shakespeare gave the name to Pericles' daughter in his play Pericles, Prince of Tyre.
Be creative with the name Marina. Just for fun, see the name Marina in Hieroglyphics, learn about ancient Egyptian Hieroglyphics and write a Hieroglyphic message. Learn about nautical flags and see your name or message written in nautical flags, on the Marina in Nautical Flags page.