The nearest seashore lies 170 kilometers away (105 miles),... - Deepstash

The nearest seashore lies 170 kilometers away (105 miles), and yet these salt-loving shrubs didn't just get up and walk away from the coastline for a fresh drink on the banks of the San Pedro river.

Combined genetic, geologic, and botanical research has now confirmed what many locals and scientists have suspected : this was once an ancient saltwater mangrove ecosystem left stranded during the last ice age, when the oceans receded.

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MORE IDEAS FROM Hidden Forest Has Been 'Trapped in Time' For 100,000 Years, Scientists Say

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Combined genetic, geologic, and botanical research has now confirmed what many locals and scientists have suspected : this was once an ancient saltwater mangrove ecosystem left stranded during the last ice age, when the oceans receded.

What we see today is thus the freshwater relic of a coastal lagoon ecosystem some 125,000 years old.

"This discovery is extraordinary," says biologist Felipe Zapata from the University of California Los Angeles. 

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Combined genetic, geologic, and botanical research has now confirmed what many locals and scientists have suspected : this was once an ancient saltwater mangrove ecosystem left stranded during the last ice age, when the oceans receded.

What we see today is thus the freshwater relic of a coastal lagoon ecosystem some 125,000 years old.

"This discovery is extraordinary," says biologist Felipe Zapata from the University of California Los Angeles. 

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Monsoon: A Primer
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The Moon affects the Earth's climate

The most obvious effect can be seen in the ocean tides. The Earth's rotation causes the Moon's gravity to pull the water on the closest side of Earth towards it, creating a bulge. The centrifugal force caused by the Earth's rotation makes the sea bulge on the other side too. These bulges of water are high tides.

Every 18.6 years, there is a lunar nodal cycle, where the lunar plane tilts away from the equatorial plane, causing tides to grow smaller. When the Moon's orbit is more in line with the Earth equator, the tides are bigger.

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National Geographic recognizes 5 oceans

Since National Geographic began making maps in 1915, it has recognized four oceans: the Atlantic, Pacific, Indian, and Arctic Oceans. Starting on the World Oceans Day 2021 (June 8) it has also recognized the Southern Ocean as the world’s fifth ocean. 

It has long been recognized by scientists, but the lack of an international agreement kept the editors from formally adding it to the list.

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