Worldwide lowlands

Wetlands & Swamps

Earth's kidneys. Half-water half-land, double the species density of either.

Species

100,000

Plant species

35,000

Endangered

25%

Pressure

35% of wetlands lost since 1970

Surprise of the day

A single hectare of wetland filters more pollutants than an industrial water-treatment plant of equivalent footprint.

Who eats who

Apex predators on top. Energy flows down.

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