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.
The Great Barrier Reef off the coast of Queensland, Australia,  is the largest coral reef in the world, around 2300km long, with  its coral cays and islands spreading over 3 â¦ 00,000 square  kilometres. Considered one of the wonders of the natural world, the  Reef is unique for being visible from Earth's orbit.