- 4 March 2014 7. What are the little black worms that get into houses at this time of year? They are about 5 to 8 cms long and usually come in at night. They crawl around for a while (sometimes up the wall) and then die. If disturbed, they curl into a tight spiral.
These are: Major regions of coral reef development. (1) The Indo-Pacific-Includes most of the Indian Ocean (excluding the Red Sea), and the western Pacific. (2) The Wider Caribbean (tropical western Atlantic) - Includes Florida, The Bahamas, Caribbean Sea proper, and coastal waters off northeastern S. America.
Coral reefs: tropical corals. Australia's 2,000km-long Great Barrier Reef is the worldâs largest coral reef. Tropical coral reefs are found between 30Â° north and south of the equator, in areas where surface water temperatures do not drop below 16Â°C. The total area of the world's tropical coral reefs is around 284,300km2. Tropical reefs can grow upwards at rates of 1cm to 100cm per year. They can form huge structures over incredibly long periods of time, making them the largest and oldest living systems on earth.