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Where Is the Amazon Reef?

OceanDiscovery

Quick Answer

The Amazon Reef is an extensive coral and sponge system discovered in 2016 on the ocean floor off the mouth of the Amazon River in northern Brazil.

The Full Story

In 2016, scientists announced the discovery of a vast reef system at the mouth of the Amazon River, stretching about 1,000 km along the continental shelf from French Guiana to Maranhão state in Brazil, at depths of 30 to 120 metres. The reef covers an estimated 9,500 km² and consists of corals, sponges, rhodolith (coralline algae) beds, and diverse marine life. Its existence surprised scientists because the Amazon plume — a massive flow of sediment-laden freshwater — was thought to create conditions inhospitable to reef formation. The reef faces threats from oil exploration: several companies hold drilling licences in the area, raising environmental concerns.

Key Facts

1.The Amazon Reef was predicted by oceanographers in the 1970s based on fish catches but not confirmed until a 2016 survey.
2.Over 60 sponge species have been identified on the reef, many previously unknown.
3.The reef exists in turbid, light-poor waters where corals rely more on filter-feeding than photosynthesis.

YouTube Angle

Suggested video title for this topic:

"The Amazon Reef — A Hidden World Beneath the River Mouth"