Some 2,000 different fish species have been identified on the Great Barrier Reef, and new ones are found each year. Scientists estimate that the reef is home to 4,000 mollusk species and over 250 different shrimp species. Even the corals that construct the reef itself are diverse—numbering some 400 species.
This colorful aquatic ecosystem is home to a staggering diversity of plant and lower animal life but is also frequented by larger species like dugongs, sea turtles, sharks, and dolphins.
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