Cardiac arrest is a sudden stop in effective blood flow due to the failure of the heart to contract effectively. Symptoms include loss of consciousness and abnormal or absent breathing. Some people may have chest pain, shortness of breath, or nausea before this occurs.
Hayman Great Barrier Reef. Australasiaâs most exclusive private island resort â the five-star Hayman Great Barrier Reef, situated just offshore from Queensland, Australia â is poised to reopen next month following temporary closure for property restoration.
Great Barrier Reef. n. 1. (Placename) a coral reef in the Coral Sea, off the NE coast of Australia, extending for about 2000 km (1250 miles) from the Torres Strait along the coast of Queensland; the largest coral reef in the world.reat Barrier Reef-the largest coral reef in the world; in the Coral Sea off the northeastern coast of Australia.