Here a coral with its large polyps exposed releases sperm into the water. (Photo: Brendan Holland)
Did you know that we post our best coastal and ocean imagery on Instagram? Follow us at instagram.com/noaaocean — and spread the word!
NOAA's National Ocean Service
N/MB6, SSMC4, Room 9149
1305 East-West Hwy
Silver Spring, MD 20910
Revised: June 22, 2015 | You are here: http://oceanservice.noaa.gov/education/tutorial_corals/media/supp_coral06b.html