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Known for their distinctive shape and often strikingly colourful markings, Angelfish are one of the more numerous species of fish in the Great Barrier Reef, with over 80 different species in the family in total. Typical characteristics of the Angelfish include their beauty, inquisitive nature, and tendency to be found in all levels of the upper reef, from the surface to the base of the area’s coral formations. Patterns which can be found on Angelfish range from thin, vivid stripes to multi-coloured speckled patterns that make no two fish of the families look exactly alike, and they form

There are 23 species of marine reptiles that inhabit the Great Barrier Reef including 6 species of sea turtles and 17 species of sea snakes. Occasionally, the saltwater crocodile also ventures out to forage on the reef, although such visits are quite rare. The sea turtles that inhabit the Great Barrier Reef include the green turtle, loggerhead turtle, hawksbill turtle, flatback turtle, leatherback turtle and the Pacific ridley turtle. Some sea turtle species, such as the green turtle, loggerhead turtle and hawksbill turtle, nest on coral cays. The flatback turtle nests on continental islands and the green and leatherback turtles nest on mainland Australia. When not nesting, these sea turtle species use the waters of the Great Barrier Reef as foraging grounds. Among the sea snakes of the Great Barrier Reef are the olive sea snake, the turtle-headed sea snake and the sea krait. All sea snakes are venomous.