Final answer:
An important distinction between barrier reefs and fringing reefs is that barrier reefs, exemplified by the Great Barrier Reef, are separated from the shore by a deep lagoon, fostering rich biodiversity and significant tourism.
Step-by-step explanation:
Distinguishing Barrier from Fringing Reefs
An important distinction between barrier reefs and fringing reefs is that the former are separated from a mainland or island shore by a deep channel or lagoon. Barrier reefs, like the Great Barrier Reef, are typically found several miles off the coast. They are distinct from fringing reefs, which are directly adjacent to land. Barrier reefs are thereby more isolated from the influence of terrestrial sedimentation and can often support a diverse range of marine life.
The Great Barrier Reef extends for 1,600 miles off the northeastern coast of Australia, and as the largest barrier reef in the world, it serves as home to thousands of marine species. This marine ecosystem supports a high level of biodiversity and draws tourism, contributing significantly to the Australian economy. Unlike fringing reefs, barrier reefs can form extensive and complex ecosystems due to their size and the clean, clear ocean waters that typically surround them.