| TSUNAMI | Catastrophic ocean wave, usually caused by a submarine earthquake, an underwater or coastal landslide, or a volcanic eruption. (7) |
| RADIO | General name for sound communication by radio waves, usually through the transmission of music, news, and other types of programs from single broadcast stations to multitudes of individual listeners e |
| SUBMERGES | Goes underwater ... or a hint to the answers on the perimeter of this puzzle |
| TORPEDO | Weapon fired underwater or in specially built depot (7) |
| EMBOLISM | A blockage of an artery, usually caused by a blood clot (8) |
| CYANOSIS | A bluish-purple discoloration of skin and mucous membranes usually caused by a deficiency of oxygen in the blood |
| ENCEPHALITIS | Inflammation of the brain, usually caused by a virus (12) |
| HEPATITIS | Inflammatory disease of the liver usually caused by a virus (9) |
| CHOP | A brand; a crack; a piece cut off; a sharp downward blow with an axe, cleaver or hand; diced food; a slice of lamb or pork; or, ocean waves (4) |
| STYE | Inflammation of a gland of the eyelid, usually caused by bacteria (4) |
| MELANOMA | What is a malignant skin tumour, usually caused by sunlight? (8) |
| ANGINA | Chest pain usually caused by restricted blood flow to the heart (6) |
| HEATRASH | Small raised spots usually caused by excessive sweating (4,4) |
| SANDBAR | Shoal in a river or coastal waters formed by waves and currents, often visible at low tide (7) |
| ARMS | Distinctive bearings, devices or emblems forming a family's heraldic insignia; or, coastal inlets (4) |
| TROUGH | Manger for livestock or horses; or, the lowest point of an ocean wave (6) |
| WAVEPOWER | Also known as ocean wave energy, this is electrical energy generated by harnessing the up-and-down motion of ocean waves (4,5) |
| COVE | A small type of bay or coastal inlet (4) |
| SEAPORT | Insert a river or coastal harbour (7) |
| UNDERSEA | Endures being torpedoed by a submarine (8) |
