Global wildlife populations have plummeted by a staggering 60 per cent since 1970, a report has warned.
Humans overusing natural resources, driving climate change and polluting the planet has been blamed for the decline.
Issuing a stark warning over the falling numbers, WWF called for an ambitious “global deal” to help combat the issue.
The deal has been compared to the international Paris Agreement formed to tackle climate change.
Its call for change comes as the charity’s new report, released on Tuesday, spelled out the damage being down to the natural world.
Only a quarter of the world’s land area is free from the impacts of human activity, according to the Living Planet Report 2018.
The report added that by 2050 this will have fallen to just a tenth.
The world’s seabirds with plastic in their stomach is estimated to have increased from 5 per cent in 1960 to 90 per cent today.
And the planet has already lost around half its shallow water corals in just 30 years, the report also warned.
Overall, populations of more than 4,000 species of mammals, reptiles, birds, fish and amphibians have declined by 60 per cent between 1970 and 2014 on average.
Tropical areas have seen the worst declines, with an 89 per cent fall in populations monitored in Latin America and the Caribbean since 1970.
Species which live in fresh water habitats, such as frogs and river fish, have seen global population falls of 83 per cent, according to the living planet index by the Zoological Society of London (ZSL) which tracks the abundance of wildlife.
From hedgehogs and puffins to elephants, rhinos and polar bears, wildlife is in decline, due to the loss of habitats, poaching, pollution of land and seas and rising global temperatures, the Living Planet report said.
Current action to protect nature is failing because it is not enough to match the scale of the threat facing the planet, the conservationists claimed.
“Exploding” levels of human consumption are driving the impacts on nature, with over-exploitation of natural resources such as over-fishing, cutting down forests to grow crops such as soy and palm oil and the use of pesticides in agriculture.
Climate change and plastic pollution are also significant and growing threats.
But wildlife is not just a “nice to have” for humans, the report warns, with human food, health and medicines all relying on natural resources.
All human economic activity ultimately depends on nature, the report said, with globally natural resources estimated to provide services worth 125 trillion US dollars (£97 trillion) a year.
With the world set to review progress on sustainable development and conserving biodiversity under UN agreements by 2020, there is a window of opportunity for action in the next two years, the conservation group argued.
A new global deal should be secured, backed by strong commitments from governments and businesses, it added.
WWF chief executive Tanya Steele said: “We are the first generation to know we are destroying our planet and the last one that can do anything about it.
“Our wanton destruction of nature, coupled with the brutal chaos of climate change, is the biggest threat to humanity.
“If we want a world with orangutans and puffins, clean air and enough food for everyone, we need urgent action from our leaders and a new global deal for nature and people that kick starts a global programme of recovery.”
