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.
2. Mystery Surrounding the Origin of the name â Black Sea. One of the best and little known Black Sea facts is the origin of its name. There are various theories as to how this sea got to be called by this particular name. Of the many prevalent theories, there is one that says that the Black sea was called âthe Seaâ for a long time before being called as the âinhospitable Seaâ before the Greeks took over its shore lines.