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  • Red coral formation at 40 metres depth, with silhouette of lone grey reef shark patrolling in the background
    red-coral-grey-reef-shark-ashmore-re...tif
  • A group of bigeye trevally (Caranx sexfasciatus) swimming around a grey reef shark (Carcharhinus amblyrynchos), with one of the fish rubbing its body against the shark's skin. Bigeye trevallies and other species of fish engage in this activity from time to time, perhaps to remove parasites or other irritations from their skin. For the most part, the sharks do not seem to mind, though they sometimes take off at high speed. Note also that one of the bigeye trevallies is dark. The change in coloration is associated with reproduction. Photographed at Blue Corner in Palau.
    bigeye-trevally-rubbing-against-grey...tif
  • Grey reef shark (Carcharhinus amblyrhynchos) patrolling the reef at Blue Corner dive site in Palau
    grey-reef-shark-carcharhinus-amblyrh...tif
  • Female grey reef sharks (Carcharhinus amblyrhynchos) with visible scarring from mating activity. During the mating season, many female sharks appear with scars like this, inflicted by amorous male sharks. Mating is a rough affair among sharks, ften with multiple males biting and holding on to female sharks. Photographed at Blue Corner dive site in Palau.
    grey-reef-shark-mating-scars-carchar...tif
  • A squadron of grey reef sharks (Carcharhinus amblyrhynchos) swimming in formation. A healthy population of sharks like this is a relatively rare sight these days, given intensive hunting of sharks for the shark fin trade.
    grey-reef-sharks-carcharhinus-amblyr...tif
  • This is what it looks like inside a massive group of spawning Lutjanus bohar snappers. The water is milky blue from the simultaneous release of eggs and sperm by hundreds of fish in this group, which were part of an enormous gathering of thousands of fish. The visibility quickly dropped to nearly zero, with fish swimming in every direction. There were bull sharks (Carcharhinus leucas), grey reef sharks (Carcharhinus amblyrhynchos) and blackfin sharks (Carcharhinus limbatus) charging through the groups of spawning fish. Photographed in Palau.
    lutjanus-bohar-snapper-spawning-aggr...tif
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Tony Wu Underwater Photography

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