A passenger plane sits stricken in the surf off the Indonesian resort island of Bali.<br/> <br />The Boeing 737, owned by budget carrier Lion Air, plunged into the sea while attempting to land early Saturday.<br/> <br />The impact cracked the plane's fuselage in two.<br/> <br />But all 108 people onboard survived, said an airplane spokesman.<br/> <br />Forty people were treated for injuries including broken legs, head wounds and shock, though only four were admitted to hospital<br/> <br />Aviation officials have launched an investigation into the crash, the sixth accident involving Lion Air since 2002.