Snail's demise suggests sixth mass extinction is under way
Some 7 per cent of non-marine animals may already be gone, according to a new assessment.
Conservationists have estimated that up to 100 species are disappearing from the planet every day because of human activity – a biological catastrophe amounting to a sixth mass extinction, the biggest since the disappearance of the dinosaurs.
But allowing for this, they think we have probably already lost 7 per cent of land animal species.
That means an estimated 130,000 previously recorded non-marine animals have disappeared from the Earth since we described and classified them.