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.
Marina-Daughter of Pericles and Thaisa, Marina was born at sea during a tempest. Pericles leaves her in Tarsus with Cleon and Dionyza because he believes the child won't survive the journey to Tyre.elicanus-One of Pericles's advisors in Tyre, Helicanus takes care of Pericles in his melancholy moods, and recommends he leave Tyre for a while after the events in Antioch.