Big-eye or Goggle-eye (Priacanthus hamrur) on wreck. Note colour change from deep red to silver. Egypt, Red Sea  ,  BIGEYES, colour-change, CORAL-REEFS, FISH, MARINE, OSTEICHTHYES, PINK, RED-SEA, shipwreck, TROPICAL, UNDERWATER, VERTEBRATES  ,  Georgette Douwma