Hanauma Bay is recovering after 10 years of strict regulations added to the park. Its a great place to snorkel in Oahu Hawaii with the shallow coral reef and calm waters. There was extensive coral damage done in the 80′s and 90′s with too many tourists feeding the fish. It was estimated that 1000 lbs of bread was being fed to fish every day.

The reefs are showing signs of regenerating along the sides of the bay, and more than 200 varieties of marine animals have been observed in its clear waters 

Alton Miyasaka, an aquatic biologist with the state Division of Aquatic Resources, said snorkelers may be disappointed there are fewer fish .

“In terms of what is a sustainable natural environment, it’s better today than it was 20 years ago,” he said.

http://www.honoluluadvertiser.com/article/20090427/NEWS01/904270354/1001