Three transects were oriented along the reef flat/crest interface at a 0-2 m depth contour, and three transects were oriented along the reef slope
at the 2-5m depth contour.
It lies on the steep reef slope
, starting at around 10 metres going all the way down to 80 metres.
However, she points out that the corals studied lie on the outer reef slope
, that Moorea is not heavily populated, and that the main human impact has been fishing.
coelestis were collected by divers using hand nets and clove oil from two sites on the reef slope
(ocean 1 and 2) and two sites within the lagoon (lagoon 1 and 2) at OTI (23[degrees]30'S, 152[degrees]06'E; n=7 per site).
Four different ecological zones of Enmedio Reef were identified for the collection and study of the distribution of macroalgae, including the lagoon, reef flat, reef slope
and deep water areas (more than four meters) such as channels, "blue holes" and deep areas adjacent to the reef.
This is reflected in the sediments from the reef slope
, which in low-seas periods contained less reef material and more magnetic minerals deposited in mud by continental rivers, she says.
The underwater search will focus on the reef slope
off the west end of Nikumaroro, where waters can reach depths of up to 1,500 meters (4,921 feet).
All three sites consist of shallow reef flats that lead seaward to a reef crest and then drop off to a reef slope
The seasonal and annual variation of coral-reef fishes on the upper reef slope
Distribution and habitat: At present the new species is known only from scattered reefs on the Great Barrier Reef and Coral Sea off the Queensland coast of Australia, captured at depths between 28-65 m on outer reef slopes
The primary fishery habitats are reef walls formed by the cliffs and large boulders (or "calves" as analogous to the chunks that fall off of icebergs) that have been dislodged from the cliffs, scattered patch reefs and hardbottom areas on the 25-30 m terrace, and deeper reef slopes
and shelves (>30 m) farther offshore that have not been well described.
It was common at depths between about 13 and 20 m, on sheltered reef slopes
where it formed aggregations of up to 10-30 individuals (Fig.