optimal reef temperature
Because of strict environmental restrictions, coral reefs generally are confined to tropical and semi-tropical waters. Coral reef locations around the world. Download. Reef-building corals cannot tolerate water temperatures below 64Â° Fahrenheit (18Â° Celsius).Many grow optimally in water temperatures between 73Â° and 84Â° Fahrenheit (23Â°â29Â°Celsius), but some can tolerate temperatures as high as 104Â° Fahrenheit (40Â° Celsius) for short periods.Most reef-building corals also require very saline (salty) water ranging from 32 to 42 parts per thousand.ecause of strict environmental restrictions, coral reefs generally are confined to tropical and semi-tropical waters. Coral reef locations around the world. Download. Reef-building corals cannot tolerate water temperatures below 64Â° Fahrenheit (18Â° Celsius).