Aquarium officials hope visitors will gain greater appreciation for sharks, which help maintain healthy reefs.

In most healthy reefs, stony corals are predominant.

The authors advocate giving control of fishing on remaining healthy reefs to villagers as the best way to preserve them.

Like the oceans in general, healthy reefs seem remarkably free of plant life.

The larvae settle and produce the backbone of a new, healthy reef within as little as a year's time.

Hundreds of species can exist in a small area of a healthy reef, many of them hidden or well camouflaged.

I'm looking for sublime places where a large healthy reef almost surfaces close to shore (ie 2-4 metres deep).

Effective management: Resilience based strategies are based on reducing threats to maintain healthy reefs.

Most captive gobies are species from saltwater, and make excellent additions to healthy reef or fish-only aquariums.

The hard coral was vibrant and unbroken, a vista of healthy reef that made my heart sing.