At a certain time on a certain night, the corals release sperm and eggs out into the water, so that it joins the current above in search of a new home.
At a certain time on a certain night, the corals release sperm and eggs out into the water, so that it joins the current above in search of a new home.
General Note
Originally released by BBC Worldwide Learning, 2011.
Streaming video file encoded with permission for digital streaming by Infobase on April 18, 2015.