This allows the correct amount of sunlight to reach corals for the production of zooxanthellae algae. There is another reason why coral polyps cannot live in muddy or murky waters. Muddy ocean water has small pieces of soil floating in it called silt or sediment . Eventually these particles land on the corals and cover them with a blanket of silt. Coral polyps covered with silt are suffocated and die quickly.
Coral polyps require warm water to live.
Warm, clear ocean water exists in tropical seas around countries like northern Australia, southern Japan, the southern United States, the Philippines, Indonesia, Caribbean, Thailand, Malaysia and the South Pacific and Micronesian countries. List what kinds of things coral polyps do not like. Approximately 3 to 5 days are required for activity to be completed. The activity should be followed by a discussion about the presence and role of salt and minerals in the ocean, and where these substances originate. When ocean water is evaporated, salts are left behind.