Consider the following statements:

1. Coral reefs are often called the “tropical rainforests of the sea” for their astounding richness of life.

2. Coral reefs over a period of time transform or evolve into coral islands.

3. Corals can live only in saline waters, and the average salinity should be between 32 to 42 parts per thousand for their proper growth.

Which of the statements given above is/are correct?