description Agincourt Reef Overview
Agincourt Reef is a group of ribbon reefs on the outer edge of Australia's Great Barrier Reef, northeast of Port Douglas in Queensland. Its position near the continental shelf gives it clear oceanic water and a variety of coral formations, fish, and other marine life. The reef is reached by commercial boats from the Port Douglas area and is used for guided snorkeling and scuba diving, including trips suitable for visitors with differing levels of experience.
insights Ranking position
Agincourt Reef ranks #17 of 114 in the Reef ranking, behind Tubbataha Reef, ahead of Great Sea Reef.
help Agincourt Reef FAQ
Where is Agincourt Reef in relation to Port Douglas?
Agincourt Reef lies offshore northeast of Port Douglas in Queensland. It is a group of ribbon reefs near the outer edge of Australia's Great Barrier Reef.
Why is the water at Agincourt Reef often clearer than at inner reefs?
Its outer-reef position places it closer to open Coral Sea water and farther from much of the coastal sediment runoff. Visibility still changes with wind, tides, plankton, and weather, so clear water is not guaranteed every day.
Can non-divers visit Agincourt Reef?
Yes. Tour operators from Port Douglas offer snorkeling, semi-submersible viewing, and introductory diving alongside trips for certified divers.
What is the difference between Agincourt Reef and the Low Isles?
Agincourt is an outer ribbon-reef system reached by a longer offshore trip, while the Low Isles are coral cays closer to Port Douglas. Agincourt is commonly chosen for outer-reef walls and coral formations, whereas the Low Isles combine shallow reef visits with an island setting.
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