Great Barrier Reef
The Great Barrier Reef is one of the most iconic natural wonders of the world, and it is often referred to as the largest living structure on the planet. It is located off the coast of north-eastern Australia and spans over 2,300 kilometres (1,400 miles) along the Queensland coastline. It is made up of over 2,900 individual reefs and 900 islands, and it covers an area of approximately 344,400 square kilometres (133,000 square miles). To put this in perspective, the Great Barrier Reef is about the same size as Japan or Germany.
The Great Barrier Reef is an incredibly diverse ecosystem that supports a vast array of marine life. It is home to over 1,500 species of fish, including clownfish, giant trevally, and barracuda, as well as over 600 species of hard and soft corals. The reef is also home to dozens of species of sharks and rays, including tiger sharks, blacktip reef sharks, and manta rays. Other marine mammals that call the Great Barrier Reef home include dugongs, dolphins, and humpback whales. The reef is also an important breeding and nesting site for sea turtles and seabirds, such as the magnificent frigatebird.
The Great Barrier Reef is a UNESCO World Heritage Site, and it is recognized for its outstanding universal value. It is one of the most important natural ecosystems on the planet, and it is a critical source of food, livelihoods, and tourism for the people of Australia. The reef generates an estimated $6 billion in economic activity each year and supports over 64,000 jobs.
The reef is attributed with significant cultural and historical heritage values under UNESCO’s World Heritage framework, along with meeting all 4 natural criteria, which includes:
- Natural beauty and natural phenomena
- Major stages of Earth’s evolutionary history
- Ecological and biological processes
- Habitats for conservation of biodiversity
The Great Barrier Reef is managed and cared for by GBRMPA (link), the Great Barrier Reef Marine Park Authority. They work alongside scientists, government departments, traditional owners, tourism operators and individuals to protect the reef from environmental threats and preserve it from future generations. The Great Barrier Reef is primarily protected by the federal Environment Protection and Biodiversity Conservation Act 1999 and the Great Barrier Reef Marine Park Act 1975. 33% of the park is highly protected through a comprehensive multiple-use zoning plan.
All day tours to the reef incur an EMC or Environmental Management Charge which goes directly to GBRMPA to fund the day-to-day management of the park.
Aboriginal and Torres Strait Islander peoples have a long history of connection with the reef. These peoples lived on what is now the seafloor, prior to sea level changes and the reef formation over 7,000 years ago. Since then connection has been maintained through care for their Sea Country through cultural practices and knowledge, including many significant cultural areas. You can read more here about the Great Barrier Reef traditional owners.
Unfortunately, the Great Barrier Reef is facing several significant environmental challenges. Climate change is one of the most pressing threats. This refers to long-term shifts in global temperatures and weather patterns, largely due to greenhouse gas emissions driven by human activity, resulting in increased severe weather in certain places, melting of ice in polar regions increasing sea level, rising temperatures, ocean acidification and habitat changes. The reef is also facing significant pressures from pollution, overfishing, and coastal development. Read more about these potential threats here.
Despite these challenges, the reef is largely a thriving ecosystem, and there is hope to overcome the threats. Many scientists, citizen projects and the Great Barrier Reef Marine Park Authority work to ensure the preservation of the reef for future generations. Blueprint 2030 is a plan to build Climate resilience and adaptation for future changes and focuses on the entire reef ecosystem, highlighting the importance of biodiversity conservation.