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 Lambrini Diamandis (born 10 October 1985), better known as Marina and the Diamonds (sometimes stylised as Marina & the Diamonds), is a Welsh singer-songwriter. Her stage name, Marina and the Diamonds, consists of Diamandis' first name and the translation of her surname which means Diamonds in Greek.