PPT Slide Slide 11 of 19 Factors-continued 4. Depth Corals live from the surface to a maximum depth of 90m. Most, however, live above 50m. Ahermatypic corals live in deep sea up to 6000m because don t need zooxanthellae.
Depth is very much related to temperature and light.
Note how close this staghorn coral is to the water s surface.