The Sharks' Habitat

The sharks I study are the female and juvenile blackfin reef sharks who live in the lagoon, within the protective arms of the barrier reef. The males live in the ocean on its outer slope, which shelves off gently, in rolling ridges, to finally fall away into the abyss.

This is how the reef appears underwater, on a good day, of course! Days when it is calm enough to photograph a wave breaking upon the reef are rare. Sharks often cross over the reef between the ocean and the lagoon when the depth of water allows; the two essentially divided populations of males and females do visit back and forth, but the juveniles remain within the protection of their shallow water habitat, in regions of thick coral, in the lagoon.


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