Schools of colorful pennantfish, pyramid and milletseed butterflyfish live in an atoll in the Northwestern Hawaiian Islands.
To learn more about coral reefs, visit:
NOAA Coral Reef Conservation Program
Corals Tutorial, (National Ocean Service Education)
Coral Reef Conservation
(Original source: What are the three main types of coral reefs?)
Posted on Flickr by NOAA’s National Ocean Service on 2010-01-08 16:39:25